TW201821267A - Laminated glass intermediate film, rolled body, and laminated glass - Google Patents

Laminated glass intermediate film, rolled body, and laminated glass Download PDF

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Publication number
TW201821267A
TW201821267A TW106134967A TW106134967A TW201821267A TW 201821267 A TW201821267 A TW 201821267A TW 106134967 A TW106134967 A TW 106134967A TW 106134967 A TW106134967 A TW 106134967A TW 201821267 A TW201821267 A TW 201821267A
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TW
Taiwan
Prior art keywords
laminated glass
intermediate film
layer
interlayer film
film
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TW106134967A
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Chinese (zh)
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TWI812599B (en
Inventor
太田祐輔
野原敦
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日商積水化學工業股份有限公司
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Publication of TW201821267A publication Critical patent/TW201821267A/en
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Publication of TWI812599B publication Critical patent/TWI812599B/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10559—Shape of the cross-section
    • B32B17/10568—Shape of the cross-section varying in thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10559—Shape of the cross-section
    • B32B17/10577—Surface roughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10678—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer comprising UV absorbers or stabilizers, e.g. antioxidants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/10816—Making laminated safety glass or glazing; Apparatus therefor by pressing
    • B32B17/10825—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts
    • B32B17/10834—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using a fluid
    • B32B17/10844—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using a fluid using a membrane between the layered product and the fluid
    • B32B17/10853—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using a fluid using a membrane between the layered product and the fluid the membrane being bag-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/22—Layered products comprising a layer of synthetic resin characterised by the use of special additives using plasticisers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • B60J1/02—Windows; Windscreens; Accessories therefor arranged at the vehicle front, e.g. structure of the glazing, mounting of the glazing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/05—5 or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2331/00—Polyvinylesters
    • B32B2331/04—Polymers of vinyl acetate, e.g. PVA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/006—Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Laminated Bodies (AREA)
  • Inorganic Insulating Materials (AREA)

Abstract

Provided is a laminated glass intermediate film capable of suppressing defects in the appearance of laminated glass by increasing the handling properties of the intermediate film thereof. Thus, a laminated glass intermediate film containing a thermoplastic resin, and having one end and another end on the opposite side of the one end, wherein the thickness at the other end is greater than the thickness at the one end, and when the intermediate film is left for 7 days at a temperature of 10 DEG C and a relative humidity of 50%, the surface resistivity at the one end of the intermediate film after being left is 9.5*1013[Omega] or less, and the surface resistivity at the other end of the intermediate film after being left is lower than the surface resistivity at the one end of the intermediate film after being left.

Description

層合玻璃用中間膜、捲繞體及層合玻璃Interlayer film for laminated glass, wound body and laminated glass

本發明係關於一種用於獲得層合玻璃之層合玻璃用中間膜。又，本發明係關於一種使用上述層合玻璃用中間膜之捲繞體及層合玻璃。The present invention relates to an interlayer film for laminated glass for obtaining laminated glass. The present invention also relates to a rolled body and a laminated glass using the interlayer film for laminated glass.

層合玻璃即便受到外部衝擊而破損，玻璃之碎片之飛散量亦較少，安全性優異。因此，上述層合玻璃被廣泛用於汽車、鐵路車輛、飛機、船舶及建築物等。上述層合玻璃係藉由於一對玻璃板之間夾入層合玻璃用中間膜而製造。 作為用於汽車之上述層合玻璃，已知有抬頭顯示器(HUD，head-up display)。HUD可使汽車之擋風玻璃顯示作為汽車之行駛資料之速度等測量資訊等。 上述HUD存在顯示於擋風玻璃之測量資訊看起來雙重之問題。 作為可抑制雙重影像之層合玻璃，於下述專利文獻1中揭示有於一對玻璃板之間夾入具有特定之楔角的楔狀之中間膜而成之層合玻璃。對於此種層合玻璃而言，藉由調整中間膜之楔角，可將由一個玻璃板反射之測量資訊之顯示與由另一玻璃板反射之測量資訊之顯示於駕駛者之視野中連結於1點。因此，測量資訊之顯示不易看起來雙重，不易妨礙駕駛者之可見範圍。 [先前技術文獻] [專利文獻] [專利文獻1]日本專利特表平4-502525號公報Even if the laminated glass is damaged by external impact, the scattered amount of glass fragments is small, and the safety is excellent. Therefore, the above-mentioned laminated glass is widely used in automobiles, railway vehicles, airplanes, ships, and buildings. The laminated glass is produced by sandwiching an interlayer film for laminated glass between a pair of glass plates. As the above-mentioned laminated glass used in automobiles, a head-up display (HUD) is known. The HUD enables the windshield of a car to display measurement information such as the speed of the car's driving data. The above HUD has a problem that the measurement information displayed on the windshield looks dual. As a laminated glass capable of suppressing double images, Patent Document 1 below discloses a laminated glass in which a wedge-shaped intermediate film having a specific wedge angle is sandwiched between a pair of glass plates. For this type of laminated glass, by adjusting the wedge angle of the interlayer film, the display of measurement information reflected by one glass plate and the display of measurement information reflected by another glass plate can be connected to 1 in the driver's field of vision. point. Therefore, the display of measurement information is not easy to look double, and it is not easy to hinder the visible range of the driver. [Prior Art Document] [Patent Document] [Patent Document 1] Japanese Patent Publication No. 4-502525

[發明所欲解決之問題] 於獲得層合玻璃之前，有將楔狀之中間膜進行捲繞而將楔狀之中間膜製成捲繞體之情形。又，楔狀之中間膜係一端與另一端之厚度不同。因此，於捲繞體中，於中間膜之一端部分與另一端部分，捲繞狀態不同。 又，捲繞體之中間膜係於使用時捲出。於該捲出時，有中間膜之一端部分與另一端部分之捲出性不同，中間膜之處理性較低之情況。例如，有捲出時產生偏移或彎曲之情況。結果，有所捲出之中間膜之表面狀態劣化，或所捲出之中間膜產生褶皺而產生所獲得之層合玻璃之外觀不良之情況。 又，於經製成捲繞體之楔狀之中間膜、及未製成捲繞體之楔狀之中間膜之任一情形時，均有如下情況：於使用楔狀之中間膜製作層合玻璃時，對層合玻璃之貼附特性於一端與另一端不同，中間膜之處理性較低。因此，有中間膜與玻璃板之接觸狀態局部不同，或中間膜產生褶皺而產生所獲得之層合玻璃之外觀不良之情況。 與厚度均勻之中間膜相比，楔狀之中間膜有處理性較低，容易產生所獲得之層合玻璃之外觀不良之傾向。 本發明之目的在於提供一種可提高中間膜之處理性而抑制層合玻璃之外觀不良之層合玻璃用中間膜。又，本發明之目的亦在於提供一種使用上述層合玻璃用中間膜之捲繞體及層合玻璃。 [解決問題之技術手段] 根據本發明之廣泛之態樣，提供一種層合玻璃用中間膜(本說明書中有時簡稱為「中間膜」)，其係用於層合玻璃之中間膜，且含有熱塑性樹脂，具有一端及與上述一端為相反側之另一端，上述另一端之厚度大於上述一端之厚度，於將上述中間膜於10℃及相對濕度50%下放置7天時，放置後之上述中間膜之上述一端之表面電阻率為9.5×1013 Ω以下，且放置後之上述中間膜之上述另一端之表面電阻率小於放置後之上述中間膜之上述一端之表面電阻率。 於本發明之中間膜之某特定態樣中，上述一端之上述中間膜之厚度相對於上述另一端之上述中間膜之厚度的比為1.2以上。 於本發明之中間膜之某特定態樣中，上述中間膜具有厚度方向之剖面形狀為楔狀之部分。 上述中間膜較佳為含有塑化劑。 於本發明之中間膜之某特定態樣中，上述中間膜具備第1層、及配置於上述第1層之第1表面側之第2層。 於本發明之中間膜之某特定態樣中，上述第1層中之上述熱塑性樹脂為聚乙烯醇縮醛樹脂，上述第2層中之上述熱塑性樹脂為聚乙烯醇縮醛樹脂，且上述第1層中之上述聚乙烯醇縮醛樹脂之羥基之含有率低於上述第2層中之上述聚乙烯醇縮醛樹脂之羥基之含有率。 於本發明之中間膜之某特定態樣中，上述第1層中之上述熱塑性樹脂為聚乙烯醇縮醛樹脂，上述第2層中之上述熱塑性樹脂為聚乙烯醇縮醛樹脂，上述第1層含有塑化劑，上述第2層含有塑化劑，上述第1層中之上述塑化劑相對於上述第1層中之上述聚乙烯醇縮醛樹脂100重量份的含量多於上述第2層中之上述塑化劑相對於上述第2層中之上述聚乙烯醇縮醛樹脂100重量份的含量。 於本發明之中間膜之某特定態樣中，上述中間膜具備配置於上述第1層之與上述第1表面側相反之第2表面側之第3層。 於本發明之中間膜之某特定態樣中，上述中間膜係用於作為抬頭顯示器之層合玻璃者。 根據本發明之廣泛之態樣，提供一種捲繞體，其具備捲芯及上述層合玻璃用中間膜，且於上述捲芯之外周捲繞有上述層合玻璃用中間膜。 根據本發明之廣泛之態樣，提供一種層合玻璃，其具備第1層合玻璃構件、第2層合玻璃構件及上述層合玻璃用中間膜，且於上述第1層合玻璃構件與上述第2層合玻璃構件之間配置有上述層合玻璃用中間膜。 [發明之效果] 本發明之層合玻璃用中間膜含有熱塑性樹脂，具有一端及與上述一端為相反側之另一端，上述另一端之厚度大於上述一端之厚度。關於本發明之層合玻璃用中間膜，於將上述中間膜於10℃及相對濕度50%下放置7天時，放置後之上述中間膜之上述一端之表面電阻率為9.5×1013 Ω以下，放置後之上述中間膜之上述另一端之表面電阻率小於放置後之上述中間膜之上述一端之表面電阻率。本發明之層合玻璃用中間膜由於具備上述構成，故而可提高中間膜之處理性而抑制層合玻璃之外觀不良。[Problems to be Solved by the Invention] Before obtaining a laminated glass, a wedge-shaped intermediate film may be wound, and a wedge-shaped intermediate film may be formed into a rolled body. Moreover, the thickness of the wedge-shaped intermediate film is different at one end and the other end. Therefore, in the wound body, the winding state is different between one end portion and the other end portion of the intermediate film. The intermediate film of the wound body is rolled out during use. At the time of the roll-out, there is a case where the roll-out property of one end portion of the intermediate film is different from the other end portion, and the rationality of the intermediate film is lower. For example, there may be a case where a deviation or bending occurs during winding. As a result, the surface state of the rolled-up interlayer film may be deteriorated, or the rolled-up interlayer film may be wrinkled, and the appearance of the obtained laminated glass may be poor. In addition, in either case of a wedge-shaped intermediate film made into a wound body and a wedge-shaped intermediate film made into a wound body, there are cases where a laminate is formed using the wedge-shaped intermediate film. In the case of glass, the adhesion characteristics of laminated glass differ from one end to the other, and the rationality of the intermediate film is low. Therefore, the contact state between the interlayer film and the glass plate may be partially different, or the interlayer film may be wrinkled to cause a poor appearance of the obtained laminated glass. Compared with an interlayer film having a uniform thickness, a wedge-shaped interlayer film has lower handling properties, and tends to cause a poor appearance of the obtained laminated glass. An object of the present invention is to provide an interlayer film for laminated glass, which can improve the rationality of the interlayer film and suppress the defective appearance of the laminated glass. Another object of the present invention is to provide a wound body and a laminated glass using the above-mentioned interlayer film for laminated glass. [Technical means to solve the problem] According to a wide aspect of the present invention, an interlayer film for laminated glass (sometimes referred to as "intermediate film" in this specification) is provided, which is an interlayer film for laminated glass, and Contains thermoplastic resin and has one end and the other end opposite to the one end. The thickness of the other end is greater than the thickness of the one end. When the intermediate film is left at 10 ° C and 50% relative humidity for 7 days, The surface resistivity of the one end of the intermediate film is 9.5 × 10 13 Ω or less, and the surface resistivity of the other end of the intermediate film after being placed is smaller than the surface resistivity of the one end of the intermediate film after being placed. In a specific aspect of the interlayer film of the present invention, a ratio of a thickness of the interlayer film at the one end to a thickness of the interlayer film at the other end is 1.2 or more. In a specific aspect of the interlayer film of the present invention, the interlayer film has a wedge-shaped portion in a cross-sectional shape in a thickness direction. The intermediate film preferably contains a plasticizer. In a specific aspect of the intermediate film of the present invention, the intermediate film includes a first layer and a second layer disposed on a first surface side of the first layer. In a specific aspect of the interlayer film of the present invention, the thermoplastic resin in the first layer is a polyvinyl acetal resin, the thermoplastic resin in the second layer is a polyvinyl acetal resin, and the first The content rate of the hydroxyl group of the said polyvinyl acetal resin in 1 layer is lower than the content rate of the hydroxyl group of the said polyvinyl acetal resin in the said 2nd layer. In a specific aspect of the interlayer film of the present invention, the thermoplastic resin in the first layer is a polyvinyl acetal resin, the thermoplastic resin in the second layer is a polyvinyl acetal resin, and the first The layer contains a plasticizer, and the second layer contains a plasticizer. The content of the plasticizer in the first layer is more than 100 parts by weight of the polyvinyl acetal resin in the first layer. The content of the plasticizer in the layer relative to 100 parts by weight of the polyvinyl acetal resin in the second layer. In a specific aspect of the interlayer film of the present invention, the interlayer film includes a third layer disposed on the second surface side of the first layer opposite to the first surface side. In a specific aspect of the interlayer film of the present invention, the interlayer film is used as a laminated glass for a head-up display. According to a wide aspect of the present invention, there is provided a wound body including a roll core and the interlayer film for laminated glass, and the interlayer film for laminated glass is wound around an outer periphery of the roll core. According to a wide aspect of the present invention, there is provided a laminated glass including a first laminated glass member, a second laminated glass member, and the interlayer film for laminated glass, and the first laminated glass member and the above The above-mentioned interlayer film for laminated glass is arranged between the second laminated glass members. [Effect of the Invention] The interlayer film for laminated glass of the present invention contains a thermoplastic resin, and has one end and the other end opposite to the one end, and the thickness of the other end is greater than the thickness of the one end. Regarding the interlayer film for laminated glass of the present invention, when the interlayer film is left at 10 ° C and a relative humidity of 50% for 7 days, the surface resistivity of the one end of the interlayer film after being left is 9.5 × 10 13 Ω or less The surface resistivity of the other end of the intermediate film after being placed is smaller than the surface resistivity of the one end of the intermediate film after being placed. Since the interlayer film for laminated glass of the present invention has the above-mentioned structure, it is possible to improve the rationality of the interlayer film and suppress the appearance defect of the laminated glass.

以下，對本發明之詳細情況進行說明。 本發明之層合玻璃用中間膜(本說明書中有時簡稱為「中間膜」)係用於層合玻璃。 本發明之中間膜具有1層之構造或2層以上之構造。本發明之中間膜可具有1層之構造，亦可具有2層以上之構造。本發明之中間膜可具有2層之構造，亦可具有3層以上之構造。本發明之中間膜可為單層之中間膜，亦可為多層之中間膜。 本發明之中間膜具有一端及與上述一端為相反側之另一端。上述一端與上述另一端係於中間膜中相對向之兩側之端部。本發明之中間膜中，上述另一端之厚度大於上述一端之厚度。 於本說明書中，有時將本發明之中間膜於10℃及相對濕度50%下放置7天的放置後之中間膜稱為中間膜X。 本發明中，上述中間膜X之上述一端之表面電阻率為9.5×1013 Ω以下。進而，於本發明中，上述中間膜X之上述另一端之表面電阻率小於上述中間膜X之上述一端之表面電阻率。 本發明中，由於具備上述構成，故而於使用本發明之中間膜獲得層合玻璃時，可提高中間膜之處理性而抑制層合玻璃之外觀不良，且可抑制層合玻璃中之雙重影像。 本發明中，於使顯示資訊自顯示單元反射至層合玻璃時，可抑制雙重影像之產生。 又，於獲得層合玻璃之前，有將中間膜捲繞而將中間膜製成捲繞體之情形。又，例如於楔狀之中間膜中，一端與另一端之厚度不同。因此，於捲繞體中，中間膜之一端部分與另一端部分之捲繞狀態不同。 又，捲繞體之中間膜係於製作層合玻璃時等之使用時捲出。本發明之中間膜係中間膜之處理性優異，捲出時不易產生偏移及彎曲。因此，所捲出之中間膜之表面狀態不易劣化，所捲出之中間膜不易產生褶皺，故而可抑制所獲得之層合玻璃之外觀不良。 又，關於本發明之中間膜，於經製成捲繞體之中間膜、及未製成捲繞體之中間膜之任一情形時，均於使用中間膜製作層合玻璃時，可於一端與另一端使對層合玻璃之貼附特性變得均勻，從而可提高中間膜之處理性。結果，中間膜與玻璃板之接觸狀態不易局部地不同，中間膜不易產生褶皺，而可抑制所獲得之層合玻璃之外觀不良。 就進一步提高中間膜之處理性且更不易產生層合玻璃之外觀不良之觀點而言，上述中間膜X之上述一端之表面電阻率較佳為10×1013 Ω以下，更佳為9.5×1013 Ω以下。上述中間膜X之上述一端之表面電阻率之下限並無特別限定。上述中間膜X之上述一端之表面電阻率越小越好。 就進一步提高中間膜之處理性且更不易產生層合玻璃之外觀不良之觀點而言，上述中間膜X之上述另一端之表面電阻率相對於上述中間膜X之上述一端之表面電阻率的比(另一端之表面電阻率/一端之表面電阻率)較佳為0.05以上，更佳為0.1以上。 就進一步提高中間膜之處理性且更不易產生層合玻璃之外觀不良之觀點而言，上述比(另一端之表面電阻率/一端之表面電阻率)未達1，較佳為0.96以下，更佳為0.95以下。 上述中間膜X之上述另一端之表面電阻率較佳為10×1013 Ω以下，更佳為未達10×1013 Ω，進一步較佳為9.6×1013 Ω以下，進而較佳為9.5×1013 Ω以下，進而更佳為未達9.5×1013 Ω，尤佳為9.12×1013 Ω以下，最佳為9.025×1013 Ω以下。若上述中間膜X之上述另一端之表面電阻率為上述上限以下，則可進一步提高中間膜之處理性，且更不易產生層合玻璃之外觀不良。 上述中間膜X之一端之表面電阻率係於距上述中間膜X之一端側之端部向內側5 cm之位置進行測定。上述中間膜X之另一端之表面電阻率係於距上述中間膜X之另一端側之端部向內側5 cm之位置進行測定。 作為測定上述表面電阻率之具體方法，有依據JIS K 6911：1995之方法。上述表面電阻率之測定中，使用表面電阻率計(Mitsubishi Chemical Analytech公司製造之「Hiresta UX」)等。 只要於上述中間膜之厚度方向一側之表面滿足上述表面電阻率即可。就進一步有效地發揮本發明之效果而言，較佳為於上述中間膜之厚度方向兩側之表面滿足上述表面電阻率。 作為控制上述表面電阻率之方法，可列舉：大量調配抗靜電劑之方法、使用抗靜電劑且進行加濕之方法、以及於低溫下保管中間膜之方法等。 本發明之中間膜適宜用於作為抬頭顯示器(HUD)之層合玻璃。本發明之中間膜較佳為HUD用中間膜。 本發明之中間膜較佳為具有與HUD之顯示區域對應之顯示對應區域。上述顯示對應區域係可良好地顯示資訊之區域。本發明之中間膜較佳為於自上述一端朝向上述另一端為10 cm之位置起至自上述一端朝向上述另一端為59.8 cm之位置為止的區域中具有上述顯示對應區域。上述顯示對應區域可存在於自上述一端朝向上述另一端為10 cm之位置起至自上述一端朝向上述另一端為59.8 cm之位置為止的區域之一部分中，亦可存在於整個區域中。 就有效地抑制雙重影像之觀點而言，較佳為於自上述一端朝向上述另一端為10 cm之位置起至自上述一端朝向上述另一端為59.8 cm之位置為止的區域中，中間膜具有厚度方向之剖面形狀為楔狀之部分。上述厚度方向之剖面形狀為楔狀之部分可存在於自上述一端朝向上述另一端為10 cm之位置起至自上述一端朝向上述另一端為59.8 cm之位置為止的區域之一部分中，亦可存在於整個區域中。 本發明之中間膜亦可具有陰影區域。上述陰影區域亦可與上述顯示對應區域分離。上述陰影區域例如係以防止因太陽光線或室外照明等而使駕駛中之駕駛員感到晃眼等為目的而設置。上述陰影區域亦有為了賦予隔熱性而設置之情況。上述陰影區域較佳為位於中間膜之緣部。上述陰影區域較佳為帶狀。 於陰影區域中，亦可為了改變色調及可見光線透過率而使用著色劑或填充劑。著色劑或填充劑可僅含有於中間膜之厚度方向之一部分區域中，亦可含有於中間膜之厚度方向之整個區域中。 就使顯示進一步良好，使視野進一步擴展之觀點而言，上述顯示對應區域之可見光線透過率較佳為80%以上，更佳為88%以上，進而較佳為90%以上。上述顯示對應區域之可見光線透過率較佳為高於上述陰影區域之可見光線透過率。上述顯示對應區域之可見光線透過率亦可低於上述陰影區域之可見光線透過率。上述顯示對應區域之可見光線透過率相較上述陰影區域之可見光線透過率，較佳為高50%以上，更佳為高60%以上。 再者，例如於顯示對應區域及陰影區域之中間膜中可見光線透過率變化之情形時，於顯示對應區域之中心位置及陰影區域之中心位置測定可見光線透過率。 可使用分光光度計(日立高新技術公司製造之「U-4100」)，依據JIS R3211(1998)，測定所獲得之層合玻璃之波長380～780 nm下之上述可見光線透過率。再者，較佳為使用厚度2 mm之透明玻璃作為玻璃板。 上述顯示對應區域較佳為具有長度方向及寬度方向。由於中間膜之通用性優異，故而上述顯示對應區域之寬度方向較佳為連結上述一端與上述另一端之方向。上述顯示對應區域較佳為帶狀。 上述中間膜較佳為具有MD(Machine Direction，縱向)方向及TD(Transverse Direction，橫向)方向。中間膜例如係藉由熔融擠出成形而獲得。MD方向係製造中間膜時之中間膜之行進方向。TD方向係與製造中間膜時之中間膜之行進方向正交之方向，且為與中間膜之厚度方向正交之方向。較佳為上述一端與上述另一端位於TD方向之兩側。 就使顯示進一步良好之觀點而言，中間膜較佳為具有厚度方向之剖面形狀為楔狀之部分。較佳為顯示對應區域之厚度方向之剖面形狀為楔狀。 以下，一面參照圖式，一面對本發明之具體實施形態進行說明。 圖1(a)及(b)中以剖視圖及前視圖模式性地示出本發明之第1實施形態之層合玻璃用中間膜。圖1(a)係沿圖1(b)中之I-I線之剖視圖。再者，為方便圖示，圖1及後述之圖中之中間膜之大小及尺寸係自實際之大小及形狀適當變更。 圖1(a)中示出中間膜11之厚度方向之剖面。再者，於圖1(a)及後述之圖中，為方便圖示，中間膜及構成中間膜之各層之厚度、以及楔角θ係以與實際之厚度及楔角不同之方式示出。 圖1(a)及(b)所示之中間膜11具備第1層1(中間層)、第2層2(表面層)及第3層3(表面層)。於第1層1之第1表面側配置並積層有第2層2。於第1層1之與第1表面相反之第2表面側配置並積層有第3層3。第1層1係配置並夾入至第2層2與第3層3之間。中間膜11係用於獲得層合玻璃。中間膜11為層合玻璃用中間膜。中間膜11為多層中間膜。 中間膜11具有一端11a及與一端11a為相反側之另一端11b。一端11a與另一端11b係相對向之兩側之端部。第2層2及第3層3之厚度方向之剖面形狀為楔狀。第1層1之厚度方向之剖面形狀為矩形。關於第2層2及第3層3之厚度，另一端11b側大於一端11a側。因此，中間膜11之另一端11b之厚度大於一端11a之厚度。因此，中間膜11具有厚度較薄之區域及厚度較厚之區域。 中間膜11具有與抬頭顯示器之顯示區域對應之顯示對應區域R1。中間膜11於顯示對應區域R1之旁邊具有周邊區域R2。本實施形態中，顯示對應區域R1為自一端11a朝向另一端11b為10 cm之位置起至自一端11a朝向另一端11b為59.8 cm之位置為止的區域。 中間膜11係與顯示對應區域R1分離地具有陰影區域R3。陰影區域R3位於中間膜11之緣部。 圖2(a)及(b)中以剖視圖及前視圖模式性地示出本發明之第2實施形態之層合玻璃用中間膜。圖2(a)係沿圖2(b)中之I-I線之剖視圖。圖2(a)中示出中間膜11A之厚度方向之剖面。 圖2(a)及(b)所示之中間膜11A具備第1層1A。中間膜11A具有僅第1層1A之1層構造，為單層之中間膜。中間膜11A為第1層1A。中間膜11A係用於獲得層合玻璃。中間膜11A為層合玻璃用中間膜。 中間膜11A具有一端11a及與一端11a為相反側之另一端11b。一端11a與另一端11b係相對向之兩側之端部。中間膜11A之另一端11b之厚度大於一端11a之厚度。因此，中間膜11A及第1層1A具有厚度較薄之區域及厚度較厚之區域。 中間膜11A及第1層1A具有厚度方向之剖面形狀為矩形之部分11Aa、1Aa及厚度方向之剖面形狀為楔狀之部分11Ab、1Ab。 中間膜11A具有與抬頭顯示器之顯示區域對應之顯示對應區域R1。中間膜11A於顯示對應區域R1之旁邊具有周邊區域R2。 中間膜11A係與顯示對應區域R1分離地具有陰影區域R3。陰影區域R3位於中間膜11A之緣部。 圖3係模式性地表示將圖1所示之層合玻璃用中間膜捲繞而成之捲繞體之立體圖。 亦可將中間膜11捲繞而製成中間膜11之捲繞體51。 圖3所示之捲繞體51具備捲芯61及中間膜11。中間膜11係捲繞於捲芯61之外周。 上述中間膜較佳為具有厚度方向之剖面形狀為楔狀之部分。上述中間膜較佳為具有厚度自一端朝向另一端逐漸變大之部分。中間膜之厚度方向之剖面形狀較佳為楔狀。作為中間膜之厚度方向之剖面形狀，可列舉梯形、三角形及五邊形等。 為了抑制雙重影像，可根據層合玻璃之安裝角度而適當設定中間膜之楔角θ。就進一步抑制雙重影像之觀點而言，中間膜之楔角θ較佳為0.01 mrad(0.0006度)以上，更佳為0.1 mrad(0.00575度)以上，進而較佳為0.2 mrad(0.0115度)以上。又，若上述楔角θ為上述下限以上，則可獲得適於卡車或公共汽車等擋風玻璃之安裝角度較大之車的層合玻璃。 就進一步抑制雙重影像之觀點而言，中間膜之楔角θ較佳為2 mrad(0.1146度)以下，更佳為0.7 mrad(0.0401度)以下，進而較佳為0.5 mrad(0.0288度)以下，尤佳為0.47 mrad(0.027度)以下。又，若上述楔角θ為上述上限以下，則可獲得適於跑車等擋風玻璃之安裝角度較小之車的層合玻璃。 上述中間膜之楔角θ係連結中間膜之最大厚度部分與最小厚度部分之中間膜之第1表面(一個表面)部分的直線、與連結中間膜之最大厚度部分與最小厚度部分之中間膜之第2表面(另一表面)部分的直線之交點處的內角。再者，於存在複數個最大厚度部分，存在複數個最小厚度部分，最大厚度部分存在於一定區域，或最小厚度部分存在於一定區域之情形時，用以求出楔角θ之最大厚度部分及最小厚度部分係以所求出之楔角θ變得最大之方式選擇。 就進一步抑制雙重影像，進一步提高中間膜之處理性且更不易產生層合玻璃之外觀不良之觀點而言，上述一端之中間膜之厚度相對於上述另一端之中間膜之厚度的比較佳為1.2以上，更佳為1.25以上，且較佳為4以下，更佳為3.7以下。 上述中間膜之厚度並無特別限定。上述中間膜之厚度表示構成中間膜之各層之合計厚度。因此，於多層之中間膜11之情形時，該中間膜之厚度表示第1層1、第2層2及第3層3之合計厚度。 中間膜之最大厚度較佳為0.1 mm以上，更佳為0.25 mm以上，進而較佳為0.5 mm以上，尤佳為0.8 mm以上，且較佳為3 mm以下，更佳為2 mm以下，進而較佳為1.5 mm以下。 將一端與另一端之間之距離設為X。中間膜較佳為於自一端朝向內側為0X～0.2X之距離之區域中具有最小厚度，且於自另一端朝向內側為0X～0.2X之距離之區域中具有最大厚度。中間膜更佳為於自一端朝向內側為0X～0.1X之距離之區域中具有最小厚度，且於自另一端朝向內側為0X～0.1X之距離之區域中具有最大厚度。較佳為中間膜於一端具有最小厚度，且中間膜於另一端具有最大厚度。中間膜11、11A於另一端11b具有最大厚度，於一端11a具有最小厚度。 上述中間膜亦可具有厚度均勻部位。上述所謂厚度均勻部位，係指於連結中間膜之上述一端與上述另一端之方向上的每10 cm之距離範圍內，厚度變化不超過10 μm。因此，上述厚度均勻部位係指於連結中間膜之上述一端與上述另一端之方向上的每10 cm之距離範圍內，厚度變化不超過10 μm之部位。具體而言，上述厚度均勻部位係指於連結中間膜之上述一端與上述另一端之方向上厚度完全未發生變化，或於連結中間膜之上述一端與上述另一端之方向上的每10 cm之距離範圍內，厚度以10 μm以下變化之部位。 就實用方面之觀點、以及充分提高接著力及耐貫通性之觀點而言，表面層之最大厚度較佳為0.001 mm以上，更佳為0.2 mm以上，進而較佳為0.3 mm以上，且較佳為1 mm以下，更佳為0.8 mm以下。 就實用方面之觀點、以及充分提高耐貫通性之觀點而言，配置於2個表面層之間的層(中間層)之最大厚度較佳為0.001 mm以上，更佳為0.1 mm以上，進而較佳為0.2 mm以上，且較佳為0.8 mm以下，更佳為0.6 mm以下，進而較佳為0.3 mm以下。 上述中間膜之一端與另一端之距離X較佳為3 m以下，更佳為2 m以下，尤佳為1.5 m以下，且較佳為0.5 m以上，更佳為0.8 m以上，尤佳為1 m以上。 以下，對構成多層中間膜之各層、以及單層中間膜之材料之詳細情況進行說明。 (熱塑性樹脂) 中間膜(各層)含有熱塑性樹脂(以下有時記載為熱塑性樹脂(0))。中間膜(各層)較佳為含有聚乙烯醇縮醛樹脂(以下有時記載為聚乙烯醇縮醛樹脂(0))作為熱塑性樹脂(0)。上述第1層較佳為含有熱塑性樹脂(以下有時記載為熱塑性樹脂(1))，且較佳為含有聚乙烯醇縮醛樹脂(以下有時記載為聚乙烯醇縮醛樹脂(1))作為熱塑性樹脂(1)。上述第2層較佳為含有熱塑性樹脂(以下有時記載為熱塑性樹脂(2))，且較佳為含有聚乙烯醇縮醛樹脂(以下有時記載為聚乙烯醇縮醛樹脂(2))作為熱塑性樹脂(2)。上述第3層較佳為含有熱塑性樹脂(以下有時記載為熱塑性樹脂(3))，且較佳為含有聚乙烯醇縮醛樹脂(以下有時記載為聚乙烯醇縮醛樹脂(3))作為熱塑性樹脂(3)。 上述熱塑性樹脂(1)、上述熱塑性樹脂(2)、上述熱塑性樹脂(3)可相同亦可不同。就進一步提高隔音性而言，上述熱塑性樹脂(1)較佳為與上述熱塑性樹脂(2)及上述熱塑性樹脂(3)不同。上述聚乙烯醇縮醛樹脂(1)、上述聚乙烯醇縮醛樹脂(2)、上述聚乙烯醇縮醛樹脂(3)可相同亦可不同。就進一步提高隔音性而言，上述聚乙烯醇縮醛樹脂(1)較佳為與上述聚乙烯醇縮醛樹脂(2)及上述聚乙烯醇縮醛樹脂(3)不同。上述熱塑性樹脂(0)、上述熱塑性樹脂(1)、上述熱塑性樹脂(2)及上述熱塑性樹脂(3)分別可僅使用1種，亦可併用2種以上。上述聚乙烯醇縮醛樹脂(0)、上述聚乙烯醇縮醛樹脂(1)、上述聚乙烯醇縮醛樹脂(2)及上述聚乙烯醇縮醛樹脂(3)分別可僅使用1種，亦可併用2種以上。 作為上述熱塑性樹脂，可列舉聚乙烯醇縮醛樹脂、乙烯-乙酸乙烯酯共聚物樹脂、乙烯-丙烯酸共聚物樹脂、聚胺基甲酸酯樹脂、聚乙烯醇樹脂、聚烯烴樹脂、聚乙酸乙烯酯樹脂及聚苯乙烯樹脂等。亦可使用該等以外之熱塑性樹脂。 上述熱塑性樹脂較佳為聚乙烯醇縮醛樹脂。藉由併用聚乙烯醇縮醛樹脂與塑化劑，本發明之中間膜對層合玻璃構件或其他中間膜之接著力進一步提高。 上述聚乙烯醇縮醛樹脂例如可藉由利用醛將聚乙烯醇(PVA)縮醛化而製造。上述聚乙烯醇縮醛樹脂較佳為聚乙烯醇之縮醛化物。上述聚乙烯醇例如可藉由將聚乙酸乙烯酯皂化而獲得。上述聚乙烯醇之皂化度一般為70～99.9莫耳%之範圍內。 上述聚乙烯醇(PVA)之平均聚合度較佳為200以上，更佳為500以上，進一步較佳為1500以上，進而較佳為1600以上，尤佳為2600以上，最佳為2700以上，且較佳為5000以下，更佳為4000以下，進而較佳為3500以下。若上述平均聚合度為上述下限以上，則層合玻璃之耐貫通性進一步提高。若上述平均聚合度為上述上限以下，則中間膜之成形變得容易。 上述聚乙烯醇之平均聚合度係藉由依據JIS K6726「聚乙烯醇試驗方法」之方法而求出。 上述聚乙烯醇縮醛樹脂中所含之縮醛基之碳數並無特別限定。製造上述聚乙烯醇縮醛樹脂時所使用之醛並無特別限定。上述聚乙烯醇縮醛樹脂中之縮醛基之碳數較佳為3～5，更佳為3或4。若上述聚乙烯醇縮醛樹脂中之縮醛基之碳數為3以上，則中間膜之玻璃轉移溫度充分降低。 上述醛並無特別限定。一般而言，適宜使用碳數為1～10之醛。作為上述碳數為1～10之醛，例如可列舉：甲醛、乙醛、丙醛、正丁醛、異丁醛、正戊醛、2-乙基丁醛、正己醛、正辛醛、正壬醛、正癸醛及苯甲醛等。較佳為丙醛、正丁醛、異丁醛、正己醛或正戊醛，更佳為丙醛、正丁醛或異丁醛，進而較佳為正丁醛。上述醛可僅使用1種，亦可併用2種以上。 上述聚乙烯醇縮醛樹脂(0)之羥基之含有率(羥基量)較佳為15莫耳%以上，更佳為18莫耳%以上，且較佳為40莫耳%以下，更佳為35莫耳%以下。若上述羥基之含有率為上述下限以上，則中間膜之接著力進一步提高。又，若上述羥基之含有率為上述上限以下，則中間膜之柔軟性變高，中間膜之處理變得容易。 上述聚乙烯醇縮醛樹脂(1)之羥基之含有率(羥基量)較佳為17莫耳%以上，更佳為20莫耳%以上，進而較佳為22莫耳%以上，且較佳為28莫耳%以下，更佳為27莫耳%以下，進而較佳為25莫耳%以下，尤佳為24莫耳%以下。若上述羥基之含有率為上述下限以上，則中間膜之機械強度進一步變高。尤其若上述聚乙烯醇縮醛樹脂(1)之羥基之含有率為20莫耳%以上，則反應效率較高而生產性優異，又，若為28莫耳%以下，則層合玻璃之隔音性進一步變高。又，若上述羥基之含有率為上述上限以下，則中間膜之柔軟性變高，中間膜之處理變得容易。 上述聚乙烯醇縮醛樹脂(2)及上述聚乙烯醇縮醛樹脂(3)之羥基之各含有率較佳為25莫耳%以上，更佳為28莫耳%以上，更佳為30莫耳%以上，進一步較佳為31.5莫耳%以上，進而較佳為32莫耳%以上，尤佳為33莫耳%以上。上述聚乙烯醇縮醛樹脂(2)及上述聚乙烯醇縮醛樹脂(3)之羥基之各含有率較佳為38莫耳%以下，更佳為37莫耳%以下，進而較佳為36.5莫耳%以下，尤佳為36莫耳%以下。若上述羥基之含有率為上述下限以上，則中間膜之接著力進一步提高。又，若上述羥基之含有率為上述上限以下，則中間膜之柔軟性變高，中間膜之處理變得容易。 就進一步提高隔音性之觀點而言，上述聚乙烯醇縮醛樹脂(1)之羥基之含有率較佳為低於上述聚乙烯醇縮醛樹脂(2)之羥基之含有率。就進一步提高隔音性之觀點而言，上述聚乙烯醇縮醛樹脂(1)之羥基之含有率較佳為低於上述聚乙烯醇縮醛樹脂(3)之羥基之含有率。就更進一步提高隔音性之觀點而言，上述聚乙烯醇縮醛樹脂(1)之羥基之含有率與上述聚乙烯醇縮醛樹脂(2)之羥基之含有率之差的絕對值較佳為1莫耳%以上，更佳為5莫耳%以上，進而較佳為9莫耳%以上，尤佳為10莫耳%以上，最佳為12莫耳%以上。就更進一步提高隔音性之觀點而言，上述聚乙烯醇縮醛樹脂(1)之羥基之含有率與上述聚乙烯醇縮醛樹脂(3)之羥基之含有率之差的絕對值較佳為1莫耳%以上，更佳為5莫耳%以上，進而較佳為9莫耳%以上，尤佳為10莫耳%以上，最佳為12莫耳%以上。上述聚乙烯醇縮醛樹脂(1)之羥基之含有率與上述聚乙烯醇縮醛樹脂(2)之羥基之含有率之差的絕對值、及上述聚乙烯醇縮醛樹脂(1)之羥基之含有率與上述聚乙烯醇縮醛樹脂(3)之羥基之含有率之差的絕對值較佳為20莫耳%以下。 上述聚乙烯醇縮醛樹脂之羥基之含有率係將鍵結有羥基之伸乙基量除以主鏈之總伸乙基量所求出的莫耳分率以百分率表示之值。上述鍵結有羥基之伸乙基量例如可依據JIS K6728「聚乙烯醇縮丁醛試驗方法」進行測定。 上述聚乙烯醇縮醛樹脂(0)之乙醯化度(乙醯基量)較佳為0.1莫耳%以上，更佳為0.3莫耳%以上，進而較佳為0.5莫耳%以上，且較佳為30莫耳%以下，更佳為25莫耳%以下，進而較佳為20莫耳%以下。若上述乙醯化度為上述下限以上，則聚乙烯醇縮醛樹脂與塑化劑之相溶性變高。若上述乙醯化度為上述上限以下，則中間膜及層合玻璃之耐濕性變高。 上述聚乙烯醇縮醛樹脂(1)之乙醯化度(乙醯基量)較佳為0.01莫耳%以上，更佳為0.1莫耳%以上，進一步較佳為7莫耳%以上，進而較佳為9莫耳%以上，且較佳為30莫耳%以下，更佳為25莫耳%以下，進而較佳為24莫耳%以下，尤佳為20莫耳%以下。若上述乙醯化度為上述下限以上，則聚乙烯醇縮醛樹脂與塑化劑之相溶性變高。若上述乙醯化度為上述上限以下，則中間膜及層合玻璃之耐濕性變高。尤其若上述聚乙烯醇縮醛樹脂(1)之乙醯化度為0.1莫耳%以上且25莫耳%以下，則耐貫通性優異。 上述聚乙烯醇縮醛樹脂(2)及上述聚乙烯醇縮醛樹脂(3)之各乙醯化度較佳為0.01莫耳%以上，更佳為0.5莫耳%以上，且較佳為10莫耳%以下，更佳為2莫耳%以下。若上述乙醯化度為上述下限以上，則聚乙烯醇縮醛樹脂與塑化劑之相溶性變高。若上述乙醯化度為上述上限以下，則中間膜及層合玻璃之耐濕性變高。 上述乙醯化度係將鍵結有乙醯基之伸乙基量除以主鏈之總伸乙基量所求出的莫耳分率以百分率表示之值。上述鍵結有乙醯基之伸乙基量例如可依據JIS K6728「聚乙烯醇縮丁醛試驗方法」進行測定。 上述聚乙烯醇縮醛樹脂(0)之縮醛化度(於聚乙烯醇縮丁醛樹脂之情形時為丁醛化度)較佳為60莫耳%以上，更佳為63莫耳%以上，且較佳為85莫耳%以下，更佳為75莫耳%以下，進而較佳為70莫耳%以下。若上述縮醛化度為上述下限以上，則聚乙烯醇縮醛樹脂與塑化劑之相溶性變高。若上述縮醛化度為上述上限以下，則為了製造聚乙烯醇縮醛樹脂所需要之反應時間變短。 上述聚乙烯醇縮醛樹脂(1)之縮醛化度(於聚乙烯醇縮丁醛樹脂之情形時為丁醛化度)較佳為47莫耳%以上，更佳為60莫耳%以上，且較佳為85莫耳%以下，更佳為80莫耳%以下，進而較佳為75莫耳%以下。若上述縮醛化度為上述下限以上，則聚乙烯醇縮醛樹脂與塑化劑之相溶性變高。若上述縮醛化度為上述上限以下，則為了製造聚乙烯醇縮醛樹脂所需要之反應時間變短。 上述聚乙烯醇縮醛樹脂(2)及上述聚乙烯醇縮醛樹脂(3)之各縮醛化度(於聚乙烯醇縮丁醛樹脂之情形時為丁醛化度)較佳為55莫耳%以上，更佳為60莫耳%以上，且較佳為75莫耳%以下，更佳為71莫耳%以下。若上述縮醛化度為上述下限以上，則聚乙烯醇縮醛樹脂與塑化劑之相溶性變高。若上述縮醛化度為上述上限以下，則為了製造聚乙烯醇縮醛樹脂所需要之反應時間變短。 上述縮醛化度係將由主鏈之總伸乙基量減去鍵結有羥基之伸乙基量及鍵結有乙醯基之伸乙基量所得的值除以主鏈之總伸乙基量所求出的莫耳分率以百分率表示之值。 上述縮醛化度可藉由依據JIS K6728「聚乙烯醇縮丁醛試驗方法」之方法或依據ASTM D1396-92之方法而算出。 再者，上述羥基之含有率(羥基量)、縮醛化度(丁醛化度)及乙醯化度較佳為根據藉由依據JIS K6728「聚乙烯醇縮丁醛試驗方法」之方法所測得之結果而算出。然而，亦可使用依據ASTM D1396-92之測定。於聚乙烯醇縮醛樹脂為聚乙烯醇縮丁醛樹脂之情形時，上述羥基之含有率(羥基量)、上述縮醛化度(丁醛化度)及上述乙醯化度可根據藉由依據JIS K6728「聚乙烯醇縮丁醛試驗方法」之方法所測得之結果而算出。 (塑化劑) 就進一步提高中間膜之接著力之觀點而言，本發明之中間膜較佳為含有塑化劑(以下有時記載為塑化劑(0))。上述第1層較佳為含有塑化劑(以下有時記載為塑化劑(1))。上述第2層較佳為含有塑化劑(以下有時記載為塑化劑(2))。上述第3層較佳為含有塑化劑(以下有時記載為塑化劑(3))。於中間膜中所含之熱塑性樹脂為聚乙烯醇縮醛樹脂之情形時，中間膜(各層)尤佳為含有塑化劑。含有聚乙烯醇縮醛樹脂之層較佳為含有塑化劑。 上述塑化劑並無特別限定。作為上述塑化劑，可使用先前公知之塑化劑。上述塑化劑可僅使用1種，亦可併用2種以上。 作為上述塑化劑，例如可列舉：一元性有機酸酯及多元性有機酸酯等有機酯塑化劑、以及有機磷酸塑化劑及有機亞磷酸塑化劑等有機磷酸塑化劑等。較佳為有機酯塑化劑。上述塑化劑較佳為液狀塑化劑。 作為上述一元性有機酸酯，並無特別限定，例如可列舉藉由二醇與一元性有機酸之反應所獲得之二醇酯等。作為上述二醇，可列舉三乙二醇、四乙二醇及三丙二醇等。作為上述一元性有機酸，可列舉丁酸、異丁酸、己酸、2-乙基丁酸、庚酸、正辛酸、2-乙基己酸、正壬酸及癸酸等。 作為上述多元性有機酸酯，並無特別限定，例如可列舉多元性有機酸與具有碳數4～8之直鏈或支鏈結構之二醇的酯化合物等。作為上述多元性有機酸，可列舉己二酸、癸二酸及壬二酸等。 作為上述有機酯塑化劑，並無特別限定，可列舉：三乙二醇二-2-乙基丙酸酯、三乙二醇二-2-乙基丁酸酯、三乙二醇二-2-乙基己酸酯、三乙二醇二辛酸酯、三乙二醇二正辛酸酯、三乙二醇二正庚酸酯、四乙二醇二正庚酸酯、癸二酸二丁酯、壬二酸二辛酯、二丁基卡必醇己二酸酯、乙二醇二-2-乙基丁酸酯、1,3-丙二醇二-2-乙基丁酸酯、1,4-丁二醇二-2-乙基丁酸酯、二乙二醇二-2-乙基丁酸酯、二乙二醇二-2-乙基己酸酯、二丙二醇二-2-乙基丁酸酯、三乙二醇二-2-乙基戊酸酯、四乙二醇二-2-乙基丁酸酯、二乙二醇二辛酸酯、己二酸二己酯、己二酸二辛酯、己二酸己基環己酯、己二酸庚酯與己二酸壬酯之混合物、己二酸二異壬酯、己二酸二異癸酯、己二酸庚基壬酯、癸二酸二丁酯、油改性癸二酸醇酸、及磷酸酯與己二酸酯之混合物等。亦可使用該等以外之有機酯塑化劑。亦可使用上述己二酸酯以外之其他己二酸酯。 作為上述有機磷酸塑化劑，並無特別限定，例如可列舉磷酸三丁氧基乙酯、磷酸異癸基苯酯及磷酸三異丙酯等。 上述塑化劑較佳為下述式(1)所表示之二酯塑化劑。 [化1]上述式(1)中，R1及R2分別表示碳數5～10之有機基，R3表示伸乙基、伸異丙基或伸正丙基，p表示3～10之整數。上述式(1)中之R1及R2分別較佳為碳數6～10之有機基。 上述塑化劑較佳為包含三乙二醇二-2-乙基己酸酯(3GO)或三乙二醇二-2-乙基丁酸酯(3GH)，更佳為包含三乙二醇二-2-乙基己酸酯。 於上述中間膜中，將上述塑化劑(0)相對於上述熱塑性樹脂(0)100重量份之含量設為含量(0)。上述含量(0)較佳為25重量份以上，更佳為30重量份以上，且較佳為100重量份以下，更佳為60重量份以下，進而較佳為50重量份以下。若上述含量(0)為上述下限以上，則層合玻璃之耐貫通性進一步變高。若上述含量(0)為上述上限以下，則中間膜之透明性進一步變高。 於上述第1層中，將上述塑化劑(1)相對於上述熱塑性樹脂(1)100重量份之含量設為含量(1)。上述含量(1)較佳為50重量份以上，更佳為55重量份以上，進而較佳為60重量份以上，且較佳為100重量份以下，更佳為90重量份以下，進而較佳為85重量份以下，尤佳為80重量份以下。若上述含量(1)為上述下限以上，則中間膜之柔軟性變高，中間膜之處理變得容易。若上述含量(1)為上述上限以下，則層合玻璃之耐貫通性進一步變高。 於上述第2層中，將上述塑化劑(2)相對於上述熱塑性樹脂(2)100重量份之含量設為含量(2)。於上述第3層中，將上述塑化劑(3)相對於上述熱塑性樹脂(3)100重量份之含量設為含量(3)。上述含量(2)及上述含量(3)分別較佳為10重量份以上，更佳為15重量份以上，進而較佳為20重量份以上，尤佳為24重量份以上，且較佳為40重量份以下，更佳為35重量份以下，進而較佳為32重量份以下，尤佳為30重量份以下。若上述含量(2)及上述含量(3)為上述下限以上，則中間膜之柔軟性變高，中間膜之處理變得容易。若上述含量(2)及上述含量(3)為上述上限以下，則層合玻璃之耐貫通性進一步提高。 為了提高層合玻璃之隔音性，較佳為上述含量(1)多於上述含量(2)，且較佳為上述含量(1)多於上述含量(3)。 就進一步提高層合玻璃之隔音性之觀點而言，上述含量(2)與上述含量(1)之差之絕對值、以及上述含量(3)與上述含量(1)之差之絕對值分別較佳為5重量份以上，更佳為8重量份以上，進而較佳為10重量份以上，尤佳為15重量份以上，最佳為20重量份以上。上述含量(2)與上述含量(1)之差之絕對值、以及上述含量(3)與上述含量(1)之差之絕對值分別較佳為80重量份以下，更佳為75重量份以下，進而較佳為70重量份以下。 (抗靜電劑) 為了調整表面電阻率，亦可使用抗靜電劑。於多層之中間膜中，表面層較佳為含有上述抗靜電劑。上述抗靜電劑可僅使用1種，亦可併用2種以上。 作為上述抗靜電劑，可列舉聚氧乙烯單烷基醚等。 上述中間膜100重量%中或含有上述抗靜電劑之層(第1層、第2層或第3層)100重量%中，上述抗靜電劑之含量較佳為0.01重量%以上，更佳為0.05重量%以上，且較佳為1重量%以下，更佳為0.8重量%以下。僅藉由上述抗靜電劑之含量無法決定表面電阻率，但若上述抗靜電劑之含量為上述下限以上及上述上限以下，則容易將表面電阻率控制於良好之範圍。 (隔熱性化合物) 上述中間膜較佳為含有隔熱性化合物。上述第1層較佳為含有隔熱性化合物。上述第2層較佳為含有隔熱性化合物。上述第3層較佳為含有隔熱性化合物。上述隔熱性化合物可僅使用1種，亦可併用2種以上。 上述隔熱性化合物較佳為含有酞菁化合物、萘酞菁化合物及蒽酞菁化合物中之至少一種成分X，或含有隔熱粒子。於此情形時，較佳為含有上述成分X與上述隔熱粒子兩者。 成分X： 上述中間膜較佳為含有酞菁化合物、萘酞菁化合物或蒽酞菁化合物(以下有時將酞菁化合物、萘酞菁化合物及蒽酞菁化合物稱為成分X)。上述第1層較佳為含有上述成分X。上述第2層較佳為含有上述成分X。上述第3層較佳為含有上述成分X。上述成分X為隔熱性化合物。上述成分X可僅使用1種，亦可併用2種以上。 上述成分X並無特別限定。作為成分X，可使用先前公知之酞菁化合物、萘酞菁化合物及蒽酞菁化合物。 作為上述成分X，可列舉酞菁、酞菁之衍生物、萘酞菁、萘酞菁之衍生物、蒽酞菁及蒽酞菁之衍生物等。上述酞菁化合物及上述酞菁之衍生物分別較佳為具有酞菁骨架。上述萘酞菁化合物及上述萘酞菁之衍生物分別較佳為具有萘酞菁骨架。上述蒽酞菁化合物及上述蒽酞菁之衍生物分別較佳為具有蒽酞菁骨架。 就進一步提高中間膜及層合玻璃之隔熱性之觀點而言，上述成分X較佳為酞菁、酞菁之衍生物、萘酞菁或萘酞菁之衍生物，更佳為酞菁或酞菁之衍生物。 就有效地提高隔熱性，且於長期間內持續以更高之水準維持可見光線透過率之觀點而言，上述成分X較佳為含有釩原子或銅原子。上述成分X較佳為含有釩原子，亦較佳為含有銅原子。上述成分X更佳為含有釩原子或銅原子之酞菁、或含有釩原子或銅原子之酞菁之衍生物。就更進一步提高中間膜及層合玻璃之隔熱性之觀點而言，上述成分X較佳為具有於釩原子上鍵結有氧原子之結構單元。 上述中間膜100重量%中或含有上述成分X之層(第1層、第2層或第3層)100重量%中，上述成分X之含量較佳為0.001重量%以上，更佳為0.005重量%以上，進而較佳為0.01重量%以上，尤佳為0.02重量%以上。上述中間膜100重量%中或含有上述成分X之層(第1層、第2層或第3層)100重量%中，上述成分X之含量較佳為0.2重量%以下，更佳為0.1重量%以下，進而較佳為0.05重量%以下，尤佳為0.04重量%以下。若上述成分X之含量為上述下限以上及上述上限以下，則隔熱性充分變高，且可見光線透過率充分變高。例如可使可見光線透過率為70%以上。 隔熱粒子： 上述中間膜較佳為含有隔熱粒子。上述第1層較佳為含有上述隔熱粒子。上述第2層較佳為含有上述隔熱粒子。上述第3層較佳為含有上述隔熱粒子。上述隔熱粒子為隔熱性化合物。藉由使用隔熱粒子，可有效地阻斷紅外線(熱射線)。上述隔熱粒子可僅使用1種，亦可併用2種以上。 就進一步提高層合玻璃之隔熱性之觀點而言，上述隔熱粒子更佳為金屬氧化物粒子。上述隔熱粒子較佳為由金屬氧化物所形成之粒子(金屬氧化物粒子)。 較可見光長之波長780 nm以上之紅外線係能量相較紫外線小。然而，紅外線係熱作用較大，若紅外線被物質吸收則以熱之形式釋放。因此，紅外線一般被稱為熱射線。藉由使用上述隔熱粒子，可有效地阻斷紅外線(熱射線)。再者，所謂隔熱粒子係指能夠吸收紅外線之粒子。 作為上述隔熱粒子之具體例，可列舉：摻鋁氧化錫粒子、摻銦氧化錫粒子、摻銻氧化錫粒子(ATO粒子)、摻鎵氧化鋅粒子(GZO粒子)、摻銦氧化鋅粒子(IZO粒子)、摻鋁氧化鋅粒子(AZO粒子)、摻鈮氧化鈦粒子、摻鈉氧化鎢粒子、摻銫氧化鎢粒子、摻鉈氧化鎢粒子、摻銣氧化鎢粒子、摻錫氧化銦粒子(ITO粒子)、摻錫氧化鋅粒子、摻矽氧化鋅粒子等金屬氧化物粒子，或六硼化鑭(LaB6 )粒子等。亦可使用該等以外之隔熱粒子。就熱射線之遮蔽功能較高而言，較佳為金屬氧化物粒子，更佳為ATO粒子、GZO粒子、IZO粒子、ITO粒子或氧化鎢粒子，尤佳為ITO粒子或氧化鎢粒子。尤其，就熱射線之遮蔽功能較高，且容易獲取而言，較佳為摻錫氧化銦粒子(ITO粒子)，亦較佳為氧化鎢粒子。 就進一步提高中間膜及層合玻璃之隔熱性之觀點而言，氧化鎢粒子較佳為摻金屬氧化鎢粒子。上述「氧化鎢粒子」中包含摻金屬氧化鎢粒子。作為上述摻金屬氧化鎢粒子，具體而言可列舉：摻鈉氧化鎢粒子、摻銫氧化鎢粒子、摻鉈氧化鎢粒子及摻銣氧化鎢粒子等。 就進一步提高中間膜及層合玻璃之隔熱性之觀點而言，尤佳為摻銫氧化鎢粒子。就更進一步提高中間膜及層合玻璃之隔熱性之觀點而言，該摻銫氧化鎢粒子較佳為式：Cs0.33 WO3 所表示之氧化鎢粒子。 上述隔熱粒子之平均粒徑較佳為0.01 μm以上，更佳為0.02 μm以上，且較佳為0.1 μm以下，更佳為0.05 μm以下。若平均粒徑為上述下限以上，則熱射線之遮蔽性充分變高。若平均粒徑為上述上限以下，則隔熱粒子之分散性變高。 上述「平均粒徑」表示體積平均粒徑。平均粒徑可使用粒度分佈測定裝置(日機裝公司製造之「UPA-EX150」)等進行測定。 上述中間膜100重量%中或含有上述隔熱粒子之層(第1層、第2層或第3層)100重量%中，上述隔熱粒子之含量(尤其氧化鎢粒子之含量)較佳為0.01重量%以上，更佳為0.1重量%以上，進而較佳為1重量%以上，尤佳為1.5重量%以上。上述中間膜100重量%中或含有上述隔熱粒子之層(第1層、第2層或第3層)100重量%中，上述隔熱粒子之含量(尤其氧化鎢粒子之含量)較佳為6重量%以下，更佳為5.5重量%以下，進而較佳為4重量%以下，尤佳為3.5重量%以下，最佳為3重量%以下。若上述隔熱粒子之含量為上述下限以上及上述上限以下，則隔熱性充分變高，且可見光線透過率充分變高。 (金屬鹽) 上述中間膜較佳為含有鹼金屬鹽、鹼土金屬鹽、或鎂鹽(以下有時將該等記載為金屬鹽M)。較佳為源自上述金屬鹽M而上述中間膜含有鹼金屬。較佳為源自上述金屬鹽M而上述中間膜含有鹼土金屬。較佳為源自上述金屬鹽M而上述中間膜含有鎂。上述第1層較佳為含有上述金屬鹽M。上述第2層較佳為含有上述金屬鹽M。上述第3層較佳為含有上述金屬鹽M。藉由使用上述金屬鹽M，控制中間膜與玻璃板等層合玻璃構件之接著性或中間膜中之各層間之接著性變得容易。上述金屬鹽M可僅使用1種，亦可併用2種以上。 上述金屬鹽M較佳為含有Li、Na、K、Rb、Cs、Mg、Ca、Sr或Ba。中間膜中所含之金屬鹽較佳為含有K或Mg。 又，上述金屬鹽M更佳為碳數2～16之有機酸之鹼金屬鹽、碳數2～16之有機酸之鹼土金屬鹽或碳數2～16之有機酸之鎂鹽，進而較佳為碳數2～16之羧酸鎂鹽或碳數2～16之羧酸鉀鹽。 上述碳數2～16之羧酸鎂鹽及上述碳數2～16之羧酸鉀鹽並無特別限定。作為該等金屬鹽，例如可列舉乙酸鎂、乙酸鉀、丙酸鎂、丙酸鉀、2-乙基丁酸鎂、2-乙基丁酸鉀、2-乙基己酸鎂及2-乙基己酸鉀等。 含有上述金屬鹽M之中間膜、或含有上述金屬鹽M之層(第1層、第2層或第3層)中之Mg及K之含量之合計較佳為5 ppm以上，更佳為10 ppm以上，進而較佳為20 ppm以上，且較佳為300 ppm以下，更佳為250 ppm以下，進而較佳為200 ppm以下。若Mg及K之含量之合計為上述下限以上及上述上限以下，則可進一步良好地控制中間膜與玻璃板之接著性或中間膜中之各層間之接著性。 (紫外線遮蔽劑) 上述中間膜較佳為含有紫外線遮蔽劑。上述第1層較佳為含有紫外線遮蔽劑。上述第2層較佳為含有紫外線遮蔽劑。上述第3層較佳為含有紫外線遮蔽劑。藉由使用紫外線遮蔽劑，即便長時間使用中間膜及層合玻璃，可見光線透過率亦不易變得更低。上述紫外線遮蔽劑可僅使用1種，亦可併用2種以上。 上述紫外線遮蔽劑中包含紫外線吸收劑。上述紫外線遮蔽劑較佳為紫外線吸收劑。 作為上述紫外線遮蔽劑，例如可列舉：含有金屬原子之紫外線遮蔽劑、含有金屬氧化物之紫外線遮蔽劑、具有苯并三唑結構之紫外線遮蔽劑(苯并三唑化合物)、具有二苯甲酮結構之紫外線遮蔽劑(二苯甲酮化合物)、具有三結構之紫外線遮蔽劑(三化合物)、具有丙二酸酯結構之紫外線遮蔽劑(丙二酸酯化合物)、具有草醯苯胺結構之紫外線遮蔽劑(草醯苯胺化合物)及具有苯甲酸酯結構之紫外線遮蔽劑(苯甲酸酯化合物)等。 作為上述含有金屬原子之紫外線遮蔽劑，例如可列舉：鉑粒子、以二氧化矽被覆鉑粒子之表面而成之粒子、鈀粒子及以二氧化矽被覆鈀粒子之表面而成之粒子等。紫外線遮蔽劑較佳為並非隔熱粒子。 上述紫外線遮蔽劑較佳為具有苯并三唑結構之紫外線遮蔽劑、具有二苯甲酮結構之紫外線遮蔽劑、具有三結構之紫外線遮蔽劑或具有苯甲酸酯結構之紫外線遮蔽劑。上述紫外線遮蔽劑更佳為具有苯并三唑結構之紫外線遮蔽劑或具有二苯甲酮結構之紫外線遮蔽劑，進而較佳為具有苯并三唑結構之紫外線遮蔽劑。 作為上述含有金屬氧化物之紫外線遮蔽劑，例如可列舉氧化鋅、氧化鈦及氧化鈰等。進而，關於含有上述金屬氧化物之紫外線遮蔽劑，表面亦可經被覆。作為上述含有金屬氧化物之紫外線遮蔽劑之表面之被覆材料，可列舉絕緣性金屬氧化物、水解性有機矽化合物及聚矽氧化合物等。 作為上述絕緣性金屬氧化物，可列舉二氧化矽、氧化鋁及氧化鋯等。上述絕緣性金屬氧化物例如具有5.0 eV以上之帶隙能。 作為上述具有苯并三唑結構之紫外線遮蔽劑，例如可列舉：2-(2'-羥基-5'-甲基苯基)苯并三唑(BASF公司製造之「TinuvinP」)、2-(2'-羥基-3',5'-二第三丁基苯基)苯并三唑(BASF公司製造之「Tinuvin320」)、2-(2'-羥基-3'-第三丁基-5-甲基苯基)-5-氯苯并三唑(BASF公司製造之「Tinuvin326」)、及2-(2'-羥基-3',5'-二-戊基苯基)苯并三唑(BASF公司製造之「Tinuvin328」)等。就吸收紫外線之性能優異而言，上述紫外線遮蔽劑較佳為具有含鹵素原子之苯并三唑結構之紫外線遮蔽劑，更佳為具有含氯原子之苯并三唑結構之紫外線遮蔽劑。 作為上述具有二苯甲酮結構之紫外線遮蔽劑，例如可列舉辛苯酮(BASF公司製造之「Chimassorb81」)等。 作為上述具有三結構之紫外線遮蔽劑，例如可列舉：ADEKA公司製造之「LA-F70」及2-(4,6-二苯基-1,3,5-三-2-基)-5-[(己基)氧基]-苯酚(BASF公司製造之「Tinuvin1577FF」)等。 作為上述具有丙二酸酯結構之紫外線遮蔽劑，可列舉：2-(對甲氧基亞苄基)丙二酸二甲酯、2,2-(1,4-伸苯基二亞甲基)雙丙二酸四乙酯、2-(對甲氧基亞苄基)-雙(1,2,2,6,6-五甲基-4-哌啶基)丙二酸酯等。 作為上述具有丙二酸酯結構之紫外線遮蔽劑之市售品，可列舉：Hostavin B-CAP、Hostavin PR-25、Hostavin PR-31(均為Clariant公司製造)。 作為上述具有草醯苯胺結構之紫外線遮蔽劑，可列舉：N-(2-乙基苯基)-N'-(2-乙氧基-5-第三丁基苯基)草酸二醯胺、N-(2-乙基苯基)-N'-(2-乙氧基-苯基)草酸二醯胺、2-乙基-2'-乙氧基-氧醯苯胺(Clariant公司製造之「SanduvorVSU」)等具有取代於氮原子上之芳基等之草酸二醯胺類。 作為上述具有苯甲酸酯結構之紫外線遮蔽劑，例如可列舉：2,4-二第三丁基苯基-3,5-二第三丁基-4-羥基苯甲酸酯(BASF公司製造之「Tinuvin120」)等。 上述中間膜100重量%中或含有上述紫外線遮蔽劑之層(第1層、第2層或第3層)100重量%中，上述紫外線遮蔽劑之含量及苯并三唑化合物之含量較佳為0.1重量%以上，更佳為0.2重量%以上，進而較佳為0.3重量%以上，尤佳為0.5重量%以上。上述中間膜100重量%中或含有上述紫外線遮蔽劑之層(第1層、第2層或第3層)100重量%中，上述紫外線遮蔽劑之含量及苯并三唑化合物之含量較佳為2.5重量%以下，更佳為2重量%以下，進而較佳為1重量%以下，尤佳為0.8重量%以下。若上述紫外線遮蔽劑之含量及苯并三唑化合物之含量為上述下限以上及上述上限以下，則可進一步抑制經過期間後之可見光線透過率之降低。尤其於含有上述紫外線遮蔽劑之層100重量%中，藉由使上述紫外線遮蔽劑之含量為0.2重量%以上，可顯著地抑制中間膜及層合玻璃之經過期間後之可見光線透過率之降低。 (抗氧化劑) 上述中間膜較佳為含有抗氧化劑。上述第1層較佳為含有抗氧化劑。上述第2層較佳為含有抗氧化劑。上述第3層較佳為含有抗氧化劑。上述抗氧化劑可僅使用1種，亦可併用2種以上。 作為上述抗氧化劑，可列舉酚系抗氧化劑、硫系抗氧化劑及磷系抗氧化劑等。上述酚系抗氧化劑係具有酚骨架之抗氧化劑。上述硫系抗氧化劑係含有硫原子之抗氧化劑。上述磷系抗氧化劑係含有磷原子之抗氧化劑。 上述抗氧化劑較佳為酚系抗氧化劑或磷系抗氧化劑。 作為上述酚系抗氧化劑，可列舉：2,6-二第三丁基對甲酚(BHT)、丁基羥基大茴香醚(BHA)、2,6-二第三丁基-4-乙基苯酚、β-(3,5-二第三丁基-4-羥基苯基)丙酸硬脂酯、2,2'-亞甲基雙-(4-甲基-6-丁基苯酚)、2,2'-亞甲基雙-(4-乙基-6-第三丁基苯酚)、4,4'-亞丁基-雙-(3-甲基-6-第三丁基苯酚)、1,1,3-三-(2-甲基-羥基-5-第三丁基苯基)丁烷、四[亞甲基-3-(3',5'-丁基-4-羥基苯基)丙酸酯]甲烷、1,3,3-三-(2-甲基-4-羥基-5-第三丁基苯酚)丁烷、1,3,5-三甲基-2,4,6-三(3,5-二第三丁基-4-羥基苄基)苯、雙(3,3'-第三丁基苯酚)丁酸二醇酯及雙(3-第三丁基-4-羥基-5-甲基苯丙酸)伸乙基雙(氧伸乙基)酯等。適宜使用該等抗氧化劑中之1種或2種以上。 作為上述磷系抗氧化劑，可列舉：亞磷酸三癸酯、亞磷酸三(十三烷基)酯、亞磷酸三苯酯、亞磷酸三壬基苯酯、雙(十三烷基)季戊四醇二亞磷酸酯、雙(癸基)季戊四醇二亞磷酸酯、亞磷酸三(2,4-二第三丁基苯基)酯、亞磷酸雙(2,4-二第三丁基-6-甲基苯基)乙酯、及2,2'-亞甲基雙(4,6-二第三丁基-1-苯基氧基)(2-乙基己基氧基)磷等。適宜使用該等抗氧化劑中之1種或2種以上。 作為上述抗氧化劑之市售品，例如可列舉：BASF公司製造之「IRGANOX 245」、BASF公司製造之「IRGAFOS 168」、BASF公司製造之「IRGAFOS 38」、住友化學工業公司製造之「Sumilizer BHT」、堺化學工業公司製造之「H-BHT」、以及BASF公司製造之「IRGANOX 1010」等。 為了於長期間內持續維持中間膜及層合玻璃之較高之可見光線透過率，於上述中間膜100重量%中或含有抗氧化劑之層(第1層、第2層或第3層)100重量%中，上述抗氧化劑之含量較佳為0.1重量%以上。又，由於抗氧化劑之添加效果飽和，故而於上述中間膜100重量%中或含有上述抗氧化劑之層100重量%中，上述抗氧化劑之含量較佳為2重量%以下。 (其他成分) 上述中間膜、上述第1層、上述第2層及上述第3層亦可分別視需要含有偶合劑、分散劑、界面活性劑、阻燃劑、顏料、染料、金屬鹽以外之接著力調整劑、耐濕劑、螢光增白劑及紅外線吸收劑等添加劑。該等添加劑可僅使用1種，亦可併用2種以上。 (層合玻璃) 圖4係表示使用圖1所示之層合玻璃用中間膜之層合玻璃之一例之剖視圖。 圖4所示之層合玻璃21具備中間膜11、第1層合玻璃構件22及第2層合玻璃構件23。中間膜11係配置並夾入至第1層合玻璃構件22與第2層合玻璃構件23之間。於中間膜11之第1表面配置有第1層合玻璃構件22。於中間膜11之與第1表面相反之第2表面配置有第2層合玻璃構件23。 作為上述層合玻璃構件，可列舉玻璃板及PET(聚對苯二甲酸乙二酯)膜等。上述層合玻璃中不僅包含於2片玻璃板之間夾入有中間膜之層合玻璃，亦包含於玻璃板與PET膜等之間夾入有中間膜之層合玻璃。層合玻璃係具備玻璃板之積層體，較佳為使用至少一片玻璃板。上述第1層合玻璃構件及上述第2層合玻璃構件分別為玻璃板或PET(聚對苯二甲酸乙二酯)膜，且較佳為上述中間膜包含至少一片玻璃板作為上述第1層合玻璃構件及上述第2層合玻璃構件。尤佳為上述第1層合玻璃構件及第2層合玻璃構件兩者為玻璃板。 作為上述玻璃板，可列舉無機玻璃及有機玻璃。作為上述無機玻璃，可列舉浮法板玻璃、熱射線吸收板玻璃、熱射線反射板玻璃、拋光板玻璃、壓花板玻璃、夾絲板玻璃及玻璃生坯等。上述有機玻璃係替代無機玻璃而使用之合成樹脂玻璃。作為上述有機玻璃，可列舉聚碳酸酯板及聚(甲基)丙烯酸系樹脂板等。作為上述聚(甲基)丙烯酸系樹脂板，可列舉聚(甲基)丙烯酸甲酯板等。 上述第1層合玻璃構件及上述第2層合玻璃構件之各厚度並無特別限定，較佳為1 mm以上，且較佳為5 mm以下。於上述層合玻璃構件為玻璃板之情形時，該玻璃板之厚度較佳為1 mm以上，且較佳為5 mm以下。於上述層合玻璃構件為PET膜之情形時，該PET膜之厚度較佳為0.03 mm以上，且較佳為0.5 mm以下。 上述層合玻璃之製造方法並無特別限定。例如於上述第1、第2層合玻璃構件之間夾入上述中間膜，通過按壓輥，或者放入至橡膠袋中進行減壓抽吸。藉此，可將殘留於第1層合玻璃構件與中間膜及第2層合玻璃構件與中間膜之間之空氣排出。其後，於約70～110℃下進行預接著而獲得積層體。其次，將積層體放入至高壓釜中，或者進行加壓，於約120～150℃及1～1.5 MPa之壓力下進行壓接。如此，可獲得層合玻璃。 上述層合玻璃可用於汽車、鐵路車輛、飛機、船舶及建築物等。上述層合玻璃較佳為建築用或車輛用之層合玻璃，更佳為車輛用層合玻璃。上述層合玻璃亦可用於該等用途以外之用途。上述層合玻璃可用於汽車之擋風玻璃、側玻璃、後玻璃或天窗玻璃等。由於隔熱性較高且可見光線透過率較高，故而上述層合玻璃適宜用於汽車。 上述層合玻璃係作為抬頭顯示器(HUD)之層合玻璃。於上述層合玻璃中，可將自控制單元發送之速度等測量資訊等自儀錶板之顯示單元呈現於擋風玻璃。因此，汽車之駕駛者之視野不會減小，可同時視認前方之視野與測量資訊。 以下揭示實施例更詳細地說明本發明。本發明並非僅限定於該等實施例。 準備以下材料。 (熱塑性樹脂) PVB(1)(聚乙烯醇縮醛樹脂，平均聚合度1700，羥基之含有率30.5莫耳%，乙醯化度1莫耳%，縮醛化度68.5莫耳%) PVB(2)(聚乙烯醇縮醛樹脂，平均聚合度2300，羥基之含有率22莫耳%，乙醯化度13莫耳%，縮醛化度65莫耳%) PVB(3)(聚乙烯醇縮醛樹脂，羥基之含有率17莫耳%，乙醯化度7莫耳%，縮醛化度76莫耳%) PVB(4)(聚乙烯醇縮醛樹脂，羥基之含有率23莫耳%，乙醯化度8莫耳%，縮醛化度69莫耳%) PVB(5)(聚乙烯醇縮醛樹脂，羥基之含有率19莫耳%，乙醯化度1莫耳%，縮醛化度80莫耳%) 關於所使用之聚乙烯醇縮醛樹脂，於縮醛化時使用碳數4之正丁醛。關於聚乙烯醇縮醛樹脂，縮醛化度(丁醛化度)、乙醯化度及羥基之含有率係藉由依據JIS K6728「聚乙烯醇縮丁醛試驗方法」之方法進行測定。再者，於藉由ASTM D1396-92進行測定之情形時，亦表示與依據JIS K6728「聚乙烯醇縮丁醛試驗方法」之方法相同之數值。 (塑化劑) 3GO(三乙二醇二-2-乙基己酸酯) 3GH(三乙二醇二-2-乙基丁酸酯) (抗靜電劑) Noigen ET-83(第一工業製藥公司製造) Nymeen S-207(日油公司製造) Nymeen S-220(日油公司製造) (紫外線遮蔽劑) Tinuvin326(2-(2'-羥基-3'-第三丁基-5-甲基苯基)-5-氯苯并三唑，BASF公司製造) (抗氧化劑) BHT(2,6-二第三丁基對甲酚) (實施例1) 用以形成中間膜之組合物之製作： 相對於PVB(1)100重量份，添加40重量份之3GO、0.3重量份之Noigen ET-83、0.2重量份之Tinuvin326、及0.2重量份之BHT，利用混合輥充分地進行混練，獲得用以形成中間膜之組合物。 中間膜之製作： 使用擠出機將用以形成中間膜之組合物擠出。於實施例1中，將中間膜擠出成形，製作楔狀之單層之中間膜。又，於甲賀高分子公司製造之捲芯(材質：加入有滑石之聚丙烯)(外徑15 cm，高度120 cm)上，於捲取張力200 N之條件下，以中間膜之擠出方向與捲芯之外周方向一致之方式捲取中間膜125 m，藉此獲得捲繞體。所獲得之中間膜於一端具有最小厚度，於另一端具有最大厚度，不具有厚度均勻部位。於所獲得之中間膜中，一端與另一端之距離X約為1 m。 (實施例2～5、11～15及比較例1、2、5、6) 分別如下述表1、3所示般設定調配成分之種類、調配成分之調配量、楔角及厚度，除此以外，以與實施例1相同之方式製作楔狀之單層之中間膜及捲繞體。 (實施例21) 分別如下述表5所示般設定調配成分之種類、調配成分之調配量、楔角及厚度，且形成有厚度均勻部位，除此以外，以與實施例1相同之方式製作楔狀之單層之中間膜及捲繞體。所獲得之中間膜於自另一端朝向一端為100 mm之距離內具有厚度一定之厚度均勻部位，厚度均勻部位之長度為100 mm。 (實施例22～25及比較例9、10) 分別如下述表5所示般設定調配成分之種類、調配成分之調配量、楔角、厚度及厚度均勻部位之長度，除此以外，以與實施例21相同之方式製作楔狀之單層之中間膜及捲繞體。 (實施例6) 用以形成第1層之組合物之製作： 相對於PVB(2)100重量份，添加60重量份之3GO、0.2重量份之Tinuvin326、及0.2重量份之BHT，利用混合輥充分地進行混練，獲得用以形成第1層之組合物。 用以形成第2層及第3層之組合物之製作： 相對於PVB(1)100重量份，添加40重量份之3GO、0.3重量份之Noigen ET-83、0.2重量份之Tinuvin326、及0.2重量份之BHT，利用混合輥充分地進行混練，獲得用以形成第2層及第3層之組合物。 中間膜之製作： 使用共擠出機將用以形成第1層之組合物與用以形成第2層及第3層之組合物共擠出。製作具有第2層/第1層/第3層之積層構造之楔狀之中間膜。又，於甲賀高分子公司製造之捲芯(材質：加入有滑石之聚丙烯)(外徑15 cm，高度120 cm)上，於捲取張力200 N之條件下，以中間膜之擠出方向與捲芯之外周方向一致之方式捲取中間膜125 m，藉此獲得捲繞體。所獲得之中間膜於一端具有最小厚度，於另一端具有最大厚度，不具有厚度均勻部位。於所獲得之中間膜中，一端與另一端之距離X約為1 m。於將中間膜之平均厚度設為T時，第1層之平均厚度為0.12T，第2層之平均厚度與上述第3層之平均厚度之合計為0.88T。第2層之平均厚度與第3層之平均厚度相同。 (實施例7～10、16～20及比較例3、4、7、8) 分別如下述表2、4所示般設定調配成分之種類、調配成分之調配量、楔角及厚度，除此以外，以與實施例6相同之方式製作楔狀之多層之中間膜及捲繞體。 (實施例26) 分別如下述表6所示般設定調配成分之種類、調配成分之調配量、楔角及厚度，且形成有厚度均勻部位，除此以外，以與實施例6相同之方式製作楔狀之單層之中間膜及捲繞體。所獲得之中間膜於自另一端朝向一端為100 mm之距離內具有厚度一定之厚度均勻部位，厚度均勻部位之長度為100 mm。 (實施例27～30及比較例11、12) 分別如下述表6所示般設定調配成分之種類、調配成分之調配量、楔角、厚度及厚度均勻部位之長度，除此以外，以與實施例26相同之方式製作楔狀之單層之中間膜及捲繞體。 (評價) (1)表面電阻率 將所獲得之中間膜於10℃及相對濕度50%下放置7天，獲得放置後之中間膜X。 測定中間膜X之一端之表面電阻率及中間膜X之另一端之表面電阻率。具體而言，使用表面電阻率計(Mitsubishi Chemical Analytech公司製造之「Hiresta UX」)，藉由依據JIS K 6911：1995之方法進行評價。 將上述中間膜X之一端設為一邊，以10 cm×10 cm之正方形之大小切出中間膜，於所切出之中間膜之中央設置電極。中間膜X之一端之表面電阻率係於距上述中間膜X之一端側之端部向內側5 cm之位置測定。 將上述中間膜X之另一端設為一邊，以10 cm×10 cm之正方形之大小切出中間膜，於所切出之中間膜之中央設置電極。上述中間膜X之另一端之表面電阻率係於距上述中間膜X之另一端側之端部向內側5 cm之位置測定。 中間膜X之一端之表面電阻率於中間膜之兩側之表面顯示出相同之值。中間膜X之另一端之表面電阻率於中間膜之兩面顯示出相同之值。 (2)捲繞體之狀態下之中間膜之處理性 藉由將所獲得之捲繞體抽出而捲出。根據以下之基準判定捲繞體之狀態下之中間膜之處理性。 [捲繞體之狀態下之中間膜之處理性] ○：捲出時無偏移及彎曲，於在中間膜之一端及另一端中間膜之表面狀態均良好且中間膜均無褶皺之狀態下將中間膜捲出 ×：捲出時有偏移或彎曲，於在中間膜之一端或另一端中間膜之表面狀態劣化之狀態或中間膜產生褶皺之狀態下將中間膜捲出 (3)製作層合玻璃時之中間膜之處理性 準備一對玻璃板(透明玻璃，510 mm×1000 mm之大小，厚度2.0 mm)。又，以與玻璃板之大小對應之大小切出所獲得之中間膜。 於一對玻璃板之間夾入中間膜而獲得積層體。將所獲得之積層體嵌入至EPDM製橡膠管(框構件)中。橡膠管之寬度為15 mm。其次，藉由真空袋法將嵌入至EPDM製橡膠管中之積層體預壓接。使用高壓釜將經預壓接之積層體於150℃及1.2 MPa之壓力下壓接，藉此獲得層合玻璃。 根據以下之基準判定製作該層合玻璃時之中間膜之處理性。 [製作層合玻璃時之中間膜之處理性] ○：獲得如下狀態之層合玻璃，即，於中間膜之一端及另一端均未產生非預期之貼附，中間膜與玻璃板之接觸狀態良好，且中間膜無褶皺 ×：獲得如下狀態之層合玻璃，即，於中間膜之一端或另一端產生非預期之貼附，中間膜與玻璃板之接觸狀態局部不同，或中間膜產生褶皺 (4)雙重影像 準備一對玻璃板(透明玻璃，510 mm×910 mm之大小，厚度2.0 mm)。於一對玻璃板之間嵌入與玻璃板之大小對應之大小之中間膜而獲得積層體。將所獲得之積層體嵌入至EPDM製橡膠管(框構件)中。橡膠管之寬度為15 mm。其次，藉由真空袋法將嵌入至EPDM製橡膠管中之積層體預壓接。使用高壓釜將經預壓接之積層體於150℃及1.2 MPa之壓力下壓接，藉此獲得層合玻璃。 以中間膜之一端成為下方之方式將所獲得之層合玻璃設置於擋風玻璃之位置。使顯示資訊自設置於層合玻璃之下方之顯示單元反射至層合玻璃，於特定之位置目視確認有無雙重影像。根據下述基準判定雙重影像。 [雙重影像之判定基準] ○：未確認到雙重影像 ×：確認到雙重影像 將中間膜之詳細情況及結果示於下述表1～6。再者，於處理性之評價結果良好之情形時，獲得外觀不良得到抑制之層合玻璃。再者，表中，「E＋12」表示「1012 」，「E＋13」表示「1013 」，「E＋14」表示「1014 」。 [表1] [表2] [表3] [表4] [表5] [表6] Hereinafter, details of the present invention will be described. The interlayer film for laminated glass of the present invention (may be simply referred to as "intermediate film" in this specification) is used for laminated glass. The intermediate film of the present invention has a structure of one layer or a structure of two or more layers. The intermediate film of the present invention may have a structure of one layer, or may have a structure of two or more layers. The interlayer film of the present invention may have a structure of two layers or a structure of three or more layers. The interlayer film of the present invention may be a single-layer interlayer film or a multi-layer interlayer film. The intermediate film of the present invention has one end and the other end opposite to the one end. The one end and the other end are connected to ends on opposite sides of the intermediate film. In the interlayer film of the present invention, the thickness of the other end is larger than the thickness of the one end. In this specification, the intermediate film of the present invention is sometimes referred to as an intermediate film X after being left for 7 days at 10 ° C. and a relative humidity of 50%. In the present invention, the surface resistivity of the one end of the intermediate film X is 9.5 × 10 13 Ω or less. Furthermore, in the present invention, the surface resistivity of the other end of the intermediate film X is smaller than the surface resistivity of the one end of the intermediate film X. In the present invention, since the above-mentioned structure is provided, when the laminated glass is obtained by using the intermediate film of the present invention, the rationality of the intermediate film can be improved, the appearance defect of the laminated glass can be suppressed, and the double image in the laminated glass can be suppressed. In the present invention, when the display information is reflected from the display unit to the laminated glass, the occurrence of double images can be suppressed. In addition, before the laminated glass is obtained, the intermediate film may be wound and the intermediate film may be formed into a wound body. Moreover, for example, in the wedge-shaped intermediate film, the thicknesses of one end and the other end are different. Therefore, in the wound body, the winding state of one end portion and the other end portion of the intermediate film is different. The interlayer film of the wound body is rolled out during use such as when producing laminated glass. The intermediate film of the present invention is excellent in reason, and it is not easy to produce deviation and bending when it is rolled out. Therefore, the surface state of the rolled-up interlayer film is not easily deteriorated, and the rolled-up interlayer film is unlikely to be wrinkled, so that the appearance of the obtained laminated glass can be suppressed. In addition, regarding the intermediate film of the present invention, when the intermediate film is made into a wound body and the intermediate film is not made into a wound body, the laminated film may be formed at one end when the laminated film is produced using the intermediate film. And the other end makes the adhesion characteristics of the laminated glass uniform, thereby improving the rationality of the intermediate film. As a result, the contact state between the interlayer film and the glass plate is not easily different locally, the interlayer film is unlikely to be wrinkled, and the appearance of the obtained laminated glass can be suppressed. From the viewpoint of further improving the rationality of the interlayer film and making it less likely to cause poor appearance of the laminated glass, the surface resistivity of the one end of the interlayer film X is preferably 10 × 10 13 Below Ω, more preferably 9.5 × 10 13 Ω or less. The lower limit of the surface resistivity of the one end of the intermediate film X is not particularly limited. The smaller the surface resistivity of the one end of the intermediate film X, the better. From the viewpoint of further improving the rationality of the interlayer film and making it less likely to cause poor appearance of the laminated glass, the ratio of the surface resistivity of the other end of the interlayer film X to the surface resistivity of the one end of the interlayer film X (Surface resistivity at the other end / Surface resistivity at one end) is preferably 0.05 or more, and more preferably 0.1 or more. From the viewpoint of further improving the rationality of the intermediate film and making it less likely to cause poor appearance of laminated glass, the above ratio (surface resistivity at the other end / surface resistivity at one end) is less than 1, preferably 0.96 or less, more It is preferably 0.95 or less. The surface resistivity of the other end of the intermediate film X is preferably 10 × 10 13 Below Ω, preferably less than 10 × 10 13 Ω, more preferably 9.6 × 10 13 Ω or less, further preferably 9.5 × 10 13 Ω or less, more preferably less than 9.5 × 10 13 Ω, particularly preferably 9.12 × 10 13 Below Ω, the best is 9.025 × 10 13 Ω or less. If the surface resistivity of the other end of the intermediate film X is equal to or lower than the upper limit, the rationality of the intermediate film can be further improved, and the appearance of the laminated glass is less likely to occur. The surface resistivity of one end of the intermediate film X was measured at a position 5 cm inward from the end portion on the one end side of the intermediate film X. The surface resistivity of the other end of the intermediate film X was measured at a position 5 cm inward from the end on the other end side of the intermediate film X. As a specific method for measuring the surface resistivity, there is a method based on JIS K 6911: 1995. In the measurement of the surface resistivity, a surface resistivity meter ("Hiresta UX" manufactured by Mitsubishi Chemical Analytech) is used. The surface on one side in the thickness direction of the intermediate film may satisfy the surface resistivity. In order to further effectively exert the effect of the present invention, it is preferable that the surfaces on both sides in the thickness direction of the intermediate film satisfy the surface resistivity. Examples of the method for controlling the surface resistivity include a method of preparing a large amount of an antistatic agent, a method of using an antistatic agent and humidifying the method, and a method of storing the intermediate film at a low temperature. The interlayer film of the present invention is suitably used as a laminated glass for a head-up display (HUD). The interlayer film of the present invention is preferably an interlayer film for HUD. The intermediate film of the present invention preferably has a display corresponding area corresponding to the display area of the HUD. The display corresponding area is an area where information can be displayed well. The intermediate film of the present invention preferably has the display corresponding area in a region from a position where the one end faces the other end to 10 cm to a position where the one end faces the other end is 59.8 cm. The display corresponding region may exist in a part of the region from the position where the one end faces the other end to 10 cm to the position where the one end faces the other end is 59.8 cm, or may exist in the entire area. From the viewpoint of effectively suppressing dual images, it is preferable that the interlayer has a thickness in a region from the position where the one end faces the other end to 10 cm to the position where the one end faces the other end is 59.8 cm. The cross-sectional shape in the direction is a wedge-shaped portion. The section with a wedge shape in the thickness direction may exist in a part from a position where the one end is 10 cm from the other end to a position where the one end is 59.8 cm toward the other end. In the entire area. The intermediate film of the present invention may also have a shadow area. The shaded area may be separated from the display corresponding area. The shaded area is provided, for example, for the purpose of preventing the driver from feeling glare due to sunlight or outdoor lighting. The shaded area may be provided to provide heat insulation. The shaded area is preferably located at the edge of the intermediate film. The shaded area is preferably band-shaped. In the shaded area, a colorant or a filler may be used in order to change the color tone and visible light transmittance. The colorant or filler may be contained in only a part of the region in the thickness direction of the intermediate film, or may be contained in the entire region in the thickness direction of the intermediate film. From the viewpoint of further improving the display and further expanding the field of vision, the visible light transmittance of the corresponding display region is preferably 80% or more, more preferably 88% or more, and even more preferably 90% or more. The visible light transmittance of the display corresponding area is preferably higher than the visible light transmittance of the shaded area. The visible light transmittance of the corresponding display area may be lower than the visible light transmittance of the shaded area. The visible light transmittance of the corresponding display area is preferably 50% or more, and more preferably 60% or more, compared to the visible light transmittance of the shaded area. Furthermore, for example, when the visible light transmittance in the intermediate film showing the corresponding region and the shadow region is changed, the visible light transmittance is measured at the center position of the display corresponding region and the center position of the shadow region. A spectrophotometer ("U-4100" manufactured by Hitachi High-tech Co., Ltd.) can be used to measure the visible light transmittance of the obtained laminated glass at a wavelength of 380 to 780 nm in accordance with JIS R3211 (1998). Furthermore, it is preferable to use a transparent glass having a thickness of 2 mm as the glass plate. The display corresponding region preferably has a length direction and a width direction. Since the interlayer film is excellent in versatility, the width direction of the display corresponding region is preferably a direction connecting the one end and the other end. The above-mentioned display corresponding region is preferably band-shaped. The intermediate film preferably has an MD (Machine Direction) direction and a TD (Transverse Direction) direction. The intermediate film is obtained, for example, by melt extrusion molding. The MD direction is the direction of travel of the intermediate film when the intermediate film is manufactured. The TD direction is a direction orthogonal to the traveling direction of the intermediate film when the intermediate film is manufactured, and is a direction orthogonal to the thickness direction of the intermediate film. Preferably, the one end and the other end are located on both sides of the TD direction. From the viewpoint of further improving the display, the intermediate film is preferably a portion having a cross-sectional shape in the thickness direction that is wedge-shaped. The cross-sectional shape showing the thickness direction of the corresponding region is preferably wedge-shaped. Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. 1 (a) and (b) schematically show a cross-sectional view and a front view of an interlayer film for laminated glass according to a first embodiment of the present invention. FIG. 1 (a) is a sectional view taken along the line II in FIG. 1 (b). Furthermore, for convenience of illustration, the size and size of the interlayer film in FIG. 1 and the drawings described later are appropriately changed from the actual size and shape. A cross section in the thickness direction of the intermediate film 11 is shown in FIG. 1 (a). In addition, in FIG. 1 (a) and the drawings described later, for convenience of illustration, the thickness of the interlayer film and each layer constituting the interlayer film, and the wedge angle θ are shown differently from the actual thickness and wedge angle. The intermediate film 11 shown in FIGS. 1 (a) and 1 (b) includes a first layer 1 (intermediate layer), a second layer 2 (surface layer), and a third layer 3 (surface layer). A second layer 2 is arranged and laminated on the first surface side of the first layer 1. The third layer 3 is arranged and laminated on the second surface side of the first layer 1 opposite to the first surface. The first layer 1 is arranged and sandwiched between the second layer 2 and the third layer 3. The intermediate film 11 is used to obtain a laminated glass. The intermediate film 11 is an intermediate film for laminated glass. The intermediate film 11 is a multilayer intermediate film. The intermediate film 11 has one end 11a and the other end 11b opposite to the one end 11a. The one end 11a and the other end 11b are ends on opposite sides. The cross-sectional shapes in the thickness direction of the second layer 2 and the third layer 3 are wedge-shaped. The cross-sectional shape of the first layer 1 in the thickness direction is rectangular. Regarding the thickness of the second layer 2 and the third layer 3, the other end 11b side is larger than the one end 11a side. Therefore, the thickness of the other end 11b of the intermediate film 11 is greater than the thickness of the one end 11a. Therefore, the intermediate film 11 has a thinner region and a thicker region. The intermediate film 11 has a display corresponding region R1 corresponding to a display region of the head-up display. The intermediate film 11 has a peripheral region R2 next to the display corresponding region R1. In the present embodiment, the display corresponding region R1 is an area from a position where the one end 11 a faces the other end 11 b to 10 cm to a position where the one end 11 a faces the other end 11 b is 59.8 cm. The intermediate film 11 has a shaded area R3 separately from the display corresponding area R1. The shaded area R3 is located at the edge of the intermediate film 11. 2 (a) and (b) schematically show a cross-sectional view and a front view of an interlayer film for laminated glass according to a second embodiment of the present invention. Fig. 2 (a) is a sectional view taken along the line II in Fig. 2 (b). FIG. 2 (a) shows a cross section in the thickness direction of the intermediate film 11A. The intermediate film 11A shown in FIGS. 2A and 2B includes a first layer 1A. The interlayer film 11A has a one-layer structure with only the first layer 1A, and is a single-layer interlayer film. The intermediate film 11A is the first layer 1A. The interlayer film 11A is used to obtain a laminated glass. The interlayer film 11A is an interlayer film for laminated glass. The intermediate film 11A has one end 11a and the other end 11b opposite to the one end 11a. The one end 11a and the other end 11b are ends on opposite sides. The thickness of the other end 11b of the intermediate film 11A is larger than the thickness of the one end 11a. Therefore, the intermediate film 11A and the first layer 1A have a thinner region and a thicker region. The intermediate film 11A and the first layer 1A have portions 11Aa and 1Aa having a rectangular cross-sectional shape in the thickness direction and portions 11Ab and 1Ab having a wedge-shaped cross-sectional shape in the thickness direction. The intermediate film 11A has a display corresponding region R1 corresponding to a display region of the head-up display. The intermediate film 11A has a peripheral region R2 beside the display corresponding region R1. The intermediate film 11A has a shaded area R3 separately from the display corresponding area R1. The shaded area R3 is located at the edge of the intermediate film 11A. 3 is a perspective view schematically showing a wound body obtained by winding the interlayer film for laminated glass shown in FIG. 1. The intermediate film 11 may be wound to form a wound body 51 of the intermediate film 11. The wound body 51 shown in FIG. 3 includes a winding core 61 and an intermediate film 11. The intermediate film 11 is wound around the outer periphery of the winding core 61. It is preferable that the said intermediate film has a wedge shape in the cross-sectional shape of the thickness direction. The intermediate film preferably has a portion whose thickness gradually increases from one end toward the other end. The cross-sectional shape in the thickness direction of the intermediate film is preferably wedge-shaped. Examples of the cross-sectional shape in the thickness direction of the intermediate film include a trapezoid, a triangle, and a pentagon. In order to suppress double images, the wedge angle θ of the interlayer film can be appropriately set according to the installation angle of the laminated glass. From the viewpoint of further suppressing double images, the wedge angle θ of the interlayer film is preferably 0.01 mrad (0.0006 degrees) or more, more preferably 0.1 mrad (0.00575 degrees) or more, and still more preferably 0.2 mrad (0.0115 degrees) or more. In addition, if the wedge angle θ is equal to or more than the lower limit, a laminated glass suitable for a vehicle with a large windshield mounting angle such as a truck or a bus can be obtained. From the viewpoint of further suppressing dual images, the wedge angle θ of the interlayer is preferably 2 mrad (0.1146 degrees) or less, more preferably 0.7 mrad (0.0401 degrees) or less, and further preferably 0.5 mrad (0.0288 degrees) or less. Particularly preferred is 0.47 mrad (0.027 degrees) or less. In addition, if the wedge angle θ is equal to or less than the upper limit, a laminated glass suitable for a car with a small installation angle of a windshield such as a sports car can be obtained. The wedge angle θ of the intermediate film is a straight line connecting the maximum thickness portion of the intermediate film and the first surface (one surface) portion of the intermediate film, and the intermediate film connecting the maximum thickness portion and the minimum thickness portion of the intermediate film. The internal angle at the intersection of a straight line on the second surface (the other surface). Furthermore, when there are a plurality of maximum thickness portions, a plurality of minimum thickness portions, a maximum thickness portion exists in a certain area, or a minimum thickness portion exists in a certain area, the maximum thickness portion of the wedge angle θ and The minimum thickness portion is selected so that the wedge angle θ obtained becomes the largest. From the viewpoint of further suppressing double images, further improving the rationality of the interlayer film, and making it less likely to cause poor appearance of the laminated glass, the thickness of the interlayer film at the one end is preferably 1.2 compared to the thickness of the interlayer film at the other end. The above is more preferably 1.25 or more, more preferably 4 or less, and even more preferably 3.7 or less. The thickness of the intermediate film is not particularly limited. The thickness of the above-mentioned intermediate film indicates the total thickness of each layer constituting the intermediate film. Therefore, in the case of the multilayer interlayer film 11, the thickness of the interlayer film represents the total thickness of the first layer 1, the second layer 2, and the third layer 3. The maximum thickness of the interlayer film is preferably 0.1 mm or more, more preferably 0.25 mm or more, even more preferably 0.5 mm or more, particularly preferably 0.8 mm or more, and more preferably 3 mm or less, more preferably 2 mm or less, further It is preferably 1.5 mm or less. Set the distance between one end and the other end to X. The intermediate film preferably has a minimum thickness in a region with a distance of 0X to 0.2X from one end to the inside, and a maximum thickness in a region with a distance of 0X to 0.2X from the other end to the inside. The intermediate film preferably has a minimum thickness in a region with a distance of 0X to 0.1X from one end to the inside, and a maximum thickness in a region with a distance of 0X to 0.1X from the other end to the inside. Preferably, the intermediate film has a minimum thickness at one end, and the intermediate film has a maximum thickness at the other end. The intermediate films 11 and 11A have the maximum thickness at the other end 11b and the minimum thickness at the one end 11a. The intermediate film may have a portion having a uniform thickness. The so-called uniform thickness part refers to a thickness variation not exceeding 10 μm within a distance of every 10 cm in the direction connecting the one end and the other end of the intermediate film. Therefore, the thickness-uniform portion refers to a portion where the thickness does not exceed 10 μm within a distance of every 10 cm in the direction connecting the one end of the intermediate film and the other end. Specifically, the thickness-uniform part means that the thickness does not change at all in the direction connecting the one end and the other end of the intermediate film, or every 10 cm in the direction connecting the one end and the other end of the intermediate film. Within a distance range, the thickness changes within 10 μm. From the viewpoint of practicality and the viewpoint of sufficiently improving the adhesive force and penetration resistance, the maximum thickness of the surface layer is preferably 0.001 mm or more, more preferably 0.2 mm or more, still more preferably 0.3 mm or more, and more preferably It is 1 mm or less, and more preferably 0.8 mm or less. From a practical viewpoint and a viewpoint of sufficiently improving penetration resistance, the maximum thickness of the layer (intermediate layer) disposed between the two surface layers is preferably 0.001 mm or more, more preferably 0.1 mm or more, and more preferably It is preferably 0.2 mm or more, and preferably 0.8 mm or less, more preferably 0.6 mm or less, and still more preferably 0.3 mm or less. The distance X between one end and the other end of the intermediate film is preferably 3 m or less, more preferably 2 m or less, particularly preferably 1.5 m or less, and more preferably 0.5 m or more, more preferably 0.8 m or more, and even more preferably 1 m or more. Hereinafter, details of each layer constituting the multilayer interlayer film and the material of the single-layer interlayer film will be described. (Thermoplastic resin) The intermediate film (each layer) contains a thermoplastic resin (hereinafter sometimes referred to as a thermoplastic resin (0)). The intermediate film (each layer) preferably contains a polyvinyl acetal resin (hereinafter sometimes referred to as a polyvinyl acetal resin (0)) as the thermoplastic resin (0). The first layer preferably contains a thermoplastic resin (hereinafter sometimes referred to as a thermoplastic resin (1)), and more preferably contains a polyvinyl acetal resin (hereinafter sometimes referred to as a polyvinyl acetal resin (1)) As a thermoplastic resin (1). The second layer preferably contains a thermoplastic resin (hereinafter sometimes referred to as a thermoplastic resin (2)), and more preferably contains a polyvinyl acetal resin (hereinafter sometimes referred to as a polyvinyl acetal resin (2)) As a thermoplastic resin (2). The third layer preferably contains a thermoplastic resin (hereinafter sometimes referred to as a thermoplastic resin (3)), and more preferably contains a polyvinyl acetal resin (hereinafter sometimes referred to as a polyvinyl acetal resin (3)) As a thermoplastic resin (3). The thermoplastic resin (1), the thermoplastic resin (2), and the thermoplastic resin (3) may be the same or different. In terms of further improving sound insulation properties, the thermoplastic resin (1) is preferably different from the thermoplastic resin (2) and the thermoplastic resin (3). The polyvinyl acetal resin (1), the polyvinyl acetal resin (2), and the polyvinyl acetal resin (3) may be the same or different. In order to further improve sound insulation, the polyvinyl acetal resin (1) is preferably different from the polyvinyl acetal resin (2) and the polyvinyl acetal resin (3). The thermoplastic resin (0), the thermoplastic resin (1), the thermoplastic resin (2), and the thermoplastic resin (3) may be used alone or in combination of two or more. The polyvinyl acetal resin (0), the polyvinyl acetal resin (1), the polyvinyl acetal resin (2), and the polyvinyl acetal resin (3) may be used alone. Two or more types may be used in combination. Examples of the thermoplastic resin include polyvinyl acetal resin, ethylene-vinyl acetate copolymer resin, ethylene-acrylic copolymer resin, polyurethane resin, polyvinyl alcohol resin, polyolefin resin, and polyvinyl acetate. Ester resin and polystyrene resin. Other thermoplastic resins can also be used. The thermoplastic resin is preferably a polyvinyl acetal resin. By using a polyvinyl acetal resin and a plasticizer together, the adhesion of the intermediate film of the present invention to a laminated glass member or other intermediate film is further improved. The polyvinyl acetal resin can be produced, for example, by acetalizing polyvinyl alcohol (PVA) with an aldehyde. The polyvinyl acetal resin is preferably an acetal compound of polyvinyl alcohol. The polyvinyl alcohol can be obtained, for example, by saponifying polyvinyl acetate. The saponification degree of the polyvinyl alcohol is generally in the range of 70 to 99.9 mol%. The average degree of polymerization of the polyvinyl alcohol (PVA) is preferably 200 or more, more preferably 500 or more, even more preferably 1500 or more, even more preferably 1600 or more, particularly preferably 2600 or more, and most preferably 2700 or more, and It is preferably 5,000 or less, more preferably 4,000 or less, and even more preferably 3500 or less. When the average polymerization degree is greater than or equal to the above lower limit, the penetration resistance of the laminated glass is further improved. When the average polymerization degree is equal to or less than the above upper limit, the formation of the intermediate film becomes easy. The average degree of polymerization of the polyvinyl alcohol is determined by a method in accordance with JIS K6726 "Test method for polyvinyl alcohol". The number of carbon atoms of the acetal group contained in the polyvinyl acetal resin is not particularly limited. The aldehyde used in the production of the polyvinyl acetal resin is not particularly limited. The carbon number of the acetal group in the polyvinyl acetal resin is preferably 3 to 5, and more preferably 3 or 4. When the carbon number of the acetal group in the polyvinyl acetal resin is 3 or more, the glass transition temperature of the interlayer film is sufficiently reduced. The aldehyde is not particularly limited. In general, aldehydes having 1 to 10 carbon atoms are suitably used. Examples of the aldehyde having 1 to 10 carbon atoms include formaldehyde, acetaldehyde, propionaldehyde, n-butyraldehyde, isobutyraldehyde, n-valeraldehyde, 2-ethylbutyraldehyde, n-hexanal, n-octaldehyde, and n-octaldehyde Nonanal, n-decanal and benzaldehyde. Preferred is propionaldehyde, n-butyraldehyde, isobutyraldehyde, n-hexanal, or n-valeraldehyde, more preferred is propionaldehyde, n-butyraldehyde, or isobutyraldehyde, and even more preferred is n-butyraldehyde. These aldehydes may be used alone or in combination of two or more. The content ratio (hydroxyl content) of the hydroxyl group of the polyvinyl acetal resin (0) is preferably 15 mol% or more, more preferably 18 mol% or more, and preferably 40 mol% or less, and more preferably 35 mol% or less. When the content rate of the said hydroxyl group is more than the said lower limit, the adhesive force of an intermediate film will improve further. Moreover, when the content rate of the said hydroxyl group is below the said upper limit, the flexibility of an intermediate film will become high and handling of an intermediate film will become easy. The content ratio (hydroxyl content) of the hydroxyl group of the polyvinyl acetal resin (1) is preferably 17 mol% or more, more preferably 20 mol% or more, still more preferably 22 mol% or more, and more preferably It is 28 mol% or less, more preferably 27 mol% or less, still more preferably 25 mol% or less, and even more preferably 24 mol% or less. If the content rate of the said hydroxyl group is more than the said lower limit, the mechanical strength of an intermediate film will become higher. Especially if the hydroxyl group content of the polyvinyl acetal resin (1) is 20 mol% or more, the reaction efficiency is high and the productivity is excellent, and if it is 28 mol% or less, the sound insulation of the laminated glass is Sexuality becomes higher. Moreover, when the content rate of the said hydroxyl group is below the said upper limit, the flexibility of an intermediate film will become high and handling of an intermediate film will become easy. The content ratios of the hydroxyl groups of the polyvinyl acetal resin (2) and the polyvinyl acetal resin (3) are preferably 25 mol% or more, more preferably 28 mol% or more, and more preferably 30 mol. More than 3 mole%, more preferably more than 31.5 mole%, still more preferably more than 32 mole%, particularly preferably more than 33 mole%. The content ratio of each hydroxyl group of the polyvinyl acetal resin (2) and the polyvinyl acetal resin (3) is preferably 38 mol% or less, more preferably 37 mol% or less, and further preferably 36.5. Molar% or less, particularly preferably 36 Mole% or less. When the content rate of the said hydroxyl group is more than the said lower limit, the adhesive force of an intermediate film will improve further. Moreover, when the content rate of the said hydroxyl group is below the said upper limit, the flexibility of an intermediate film will become high and handling of an intermediate film will become easy. From the viewpoint of further improving sound insulation, the content ratio of the hydroxyl group of the polyvinyl acetal resin (1) is preferably lower than the content ratio of the hydroxyl group of the polyvinyl acetal resin (2). From the viewpoint of further improving sound insulation, the content ratio of the hydroxyl group of the polyvinyl acetal resin (1) is preferably lower than the content ratio of the hydroxyl group of the polyvinyl acetal resin (3). From the viewpoint of further improving sound insulation, the absolute value of the difference between the content ratio of the hydroxyl group of the polyvinyl acetal resin (1) and the content ratio of the hydroxyl group of the polyvinyl acetal resin (2) is preferably 1 mol% or more, more preferably 5 mol% or more, still more preferably 9 mol% or more, particularly preferably 10 mol% or more, and most preferably 12 mol% or more. From the viewpoint of further improving sound insulation, the absolute value of the difference between the content ratio of the hydroxyl group of the polyvinyl acetal resin (1) and the content ratio of the hydroxyl group of the polyvinyl acetal resin (3) is preferably 1 mol% or more, more preferably 5 mol% or more, still more preferably 9 mol% or more, particularly preferably 10 mol% or more, and most preferably 12 mol% or more. The absolute value of the difference between the content ratio of the hydroxyl group of the polyvinyl acetal resin (1) and the content ratio of the hydroxyl group of the polyvinyl acetal resin (2), and the hydroxyl group of the polyvinyl acetal resin (1) The absolute value of the difference between the content rate and the hydroxyl group content rate of the polyvinyl acetal resin (3) is preferably 20 mol% or less. The content ratio of the hydroxyl group of the polyvinyl acetal resin is a value expressed as a percentage of a mole fraction obtained by dividing the amount of ethyl groups bonded to the hydroxyl group by the total amount of ethyl groups of the main chain. The above-mentioned hydroxyl-bonded ethylenic group can be measured in accordance with JIS K6728 "Testing method for polyvinyl butyral", for example. The degree of acetylation (the amount of ethyl acetate) of the polyvinyl acetal resin (0) is preferably 0.1 mol% or more, more preferably 0.3 mol% or more, and further preferably 0.5 mol% or more, and It is preferably 30 mol% or less, more preferably 25 mol% or less, and still more preferably 20 mol% or less. When the degree of acetylation is greater than or equal to the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer becomes high. When the degree of acetylation is equal to or less than the above upper limit, the moisture resistance of the interlayer film and the laminated glass becomes high. The degree of acetylation (the amount of ethyl acetate) of the polyvinyl acetal resin (1) is preferably 0.01 mol% or more, more preferably 0.1 mol% or more, and still more preferably 7 mol% or more. It is preferably 9 mol% or more, and more preferably 30 mol% or less, more preferably 25 mol% or less, still more preferably 24 mol% or less, and even more preferably 20 mol% or less. When the degree of acetylation is greater than or equal to the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer becomes high. When the degree of acetylation is equal to or less than the above upper limit, the moisture resistance of the interlayer film and the laminated glass becomes high. In particular, if the degree of acetylation of the polyvinyl acetal resin (1) is 0.1 mol% or more and 25 mol% or less, the penetration resistance is excellent. The degree of acetylation of the polyvinyl acetal resin (2) and the polyvinyl acetal resin (3) is preferably 0.01 mol% or more, more preferably 0.5 mol% or more, and preferably 10 Molar% or less, more preferably 2 Molar% or less. When the degree of acetylation is greater than or equal to the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer becomes high. When the degree of acetylation is equal to or less than the above upper limit, the moisture resistance of the interlayer film and the laminated glass becomes high. The above degree of acetylation is a value expressed as a percentage of a mole fraction obtained by dividing the amount of ethyl groups bonded to an ethyl group by the total amount of ethyl groups of the main chain. The amount of the ethylenic group to which the acetofluorenyl group is bonded can be measured in accordance with JIS K6728 "Testing method for polyvinyl butyral", for example. The degree of acetalization of the polyvinyl acetal resin (0) (butylation degree in the case of polyvinyl butyral resin) is preferably 60 mol% or more, and more preferably 63 mol% or more. It is preferably 85 mol% or less, more preferably 75 mol% or less, and still more preferably 70 mol% or less. When the degree of acetalization is at least the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer becomes high. When the degree of acetalization is equal to or less than the upper limit described above, the reaction time required to produce a polyvinyl acetal resin becomes short. The degree of acetalization of the polyvinyl acetal resin (1) (butylation degree in the case of polyvinyl butyral resin) is preferably 47 mol% or more, and more preferably 60 mol% or more. It is preferably 85 mol% or less, more preferably 80 mol% or less, and still more preferably 75 mol% or less. When the degree of acetalization is at least the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer becomes high. When the degree of acetalization is equal to or less than the upper limit described above, the reaction time required to produce a polyvinyl acetal resin becomes short. Each of the polyvinyl acetal resin (2) and the polyvinyl acetal resin (3) has a degree of acetalization (in the case of a polyvinyl butyral resin, the degree of butyralization) is preferably 55 mol. Ear mole% or more, more preferably 60 mole% or more, and more preferably 75 mole% or less, more preferably 71 mole% or less. When the degree of acetalization is at least the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer becomes high. When the degree of acetalization is equal to or less than the upper limit described above, the reaction time required to produce a polyvinyl acetal resin becomes short. The above degree of acetalization is a value obtained by dividing the total amount of ethyl groups in the main chain minus the amount of ethyl groups bonded with hydroxyl groups and the amount of ethyl groups bonded with acetamidine groups divided by the total number of ethyl groups in the main chain. The Mohr fraction is a value expressed as a percentage. The above acetalization degree can be calculated by a method according to JIS K6728 "Testing method for polyvinyl butyral" or a method according to ASTM D1396-92. The content of the hydroxyl groups (amount of hydroxyl groups), the degree of acetalization (degree of butyralization), and the degree of acetylation are preferably based on the method according to JIS K6728 "Test method for polyvinyl butyral" Measured results are calculated. However, a measurement according to ASTM D1396-92 can also be used. In the case where the polyvinyl acetal resin is a polyvinyl butyral resin, the content ratio of the above-mentioned hydroxyl groups (the amount of hydroxyl groups), the above-mentioned degree of acetalization (the degree of butyralization), and the above-mentioned degree of acetylation can be determined according to Calculated based on the results measured by the method of JIS K6728 "Testing method for polyvinyl butyral". (Plasticizer) From the viewpoint of further improving the adhesion of the intermediate film, the intermediate film of the present invention preferably contains a plasticizer (hereinafter sometimes referred to as a plasticizer (0)). The first layer preferably contains a plasticizer (hereinafter sometimes referred to as a plasticizer (1)). The second layer preferably contains a plasticizer (hereinafter sometimes referred to as a plasticizer (2)). The third layer preferably contains a plasticizer (hereinafter sometimes referred to as a plasticizer (3)). When the thermoplastic resin contained in the interlayer film is a polyvinyl acetal resin, the interlayer film (each layer) preferably contains a plasticizer. The polyvinyl acetal resin-containing layer preferably contains a plasticizer. The plasticizer is not particularly limited. As the plasticizer, a conventionally known plasticizer can be used. These plasticizers may be used alone or in combination of two or more. Examples of the plasticizer include organic ester plasticizers such as monobasic organic acid esters and polybasic organic acid esters, and organic phosphoric acid plasticizers such as organic phosphoric acid plasticizers and organic phosphorous acid plasticizers. Organic ester plasticizers are preferred. The plasticizer is preferably a liquid plasticizer. The monobasic organic acid ester is not particularly limited, and examples thereof include glycol esters obtained by reacting a diol with a monobasic organic acid. Examples of the diol include triethylene glycol, tetraethylene glycol, and tripropylene glycol. Examples of the monobasic organic acid include butyric acid, isobutyric acid, hexanoic acid, 2-ethylbutanoic acid, heptanoic acid, n-octanoic acid, 2-ethylhexanoic acid, n-nonanoic acid, and capric acid. The polybasic organic acid ester is not particularly limited, and examples thereof include an ester compound of a polybasic organic acid and a diol having a linear or branched structure having 4 to 8 carbon atoms. Examples of the polybasic organic acid include adipic acid, sebacic acid, and azelaic acid. The organic ester plasticizer is not particularly limited, and examples thereof include triethylene glycol di-2-ethylpropionate, triethylene glycol di-2-ethylbutyrate, and triethylene glycol di- 2-ethylhexanoate, triethylene glycol dicaprylate, triethylene glycol di-n-octanoate, triethylene glycol di-n-heptanoate, tetraethylene glycol di-n-heptanoate, sebacic acid Dibutyl ester, dioctyl azelate, dibutylcarbitol adipate, ethylene glycol di-2-ethylbutyrate, 1,3-propanediol di-2-ethylbutyrate, 1,4-butanediol di-2-ethylbutyrate, diethylene glycol di-2-ethylbutyrate, diethylene glycol di-2-ethylhexanoate, dipropylene glycol di-2 -Ethyl butyrate, triethylene glycol di-2-ethylvalerate, tetraethylene glycol di-2-ethylbutyrate, diethylene glycol dicaprylate, dihexyl adipate , Dioctyl adipate, hexylcyclohexyl adipate, a mixture of heptyl adipate and nonyl adipate, diisononyl adipate, diisodecyl adipate, heptyl adipate Base nonyl ester, dibutyl sebacate, oil-modified sebacic acid alkyd, and mixtures of phosphate and adipate. Other organic ester plasticizers can also be used. Adipates other than the above-mentioned adipates can also be used. The organic phosphate plasticizer is not particularly limited, and examples thereof include tributoxyethyl phosphate, isodecylphenyl phosphate, and triisopropyl phosphate. The plasticizer is preferably a diester plasticizer represented by the following formula (1). [Chemical 1] In the above formula (1), R1 and R2 each represent an organic group having 5 to 10 carbon atoms, R3 represents an ethylidene group, an isopropyl group, or an n-propyl group, and p represents an integer of 3 to 10. R1 and R2 in the formula (1) are each preferably an organic group having 6 to 10 carbon atoms. The plasticizer preferably contains triethylene glycol di-2-ethylhexanoate (3GO) or triethylene glycol di-2-ethylbutyrate (3GH), and more preferably contains triethylene glycol. Di-2-ethylhexanoate. In the intermediate film, a content of the plasticizer (0) with respect to 100 parts by weight of the thermoplastic resin (0) is referred to as a content (0). The content (0) is preferably 25 parts by weight or more, more preferably 30 parts by weight or more, and preferably 100 parts by weight or less, more preferably 60 parts by weight or less, and still more preferably 50 parts by weight or less. When the said content (0) is more than the said minimum, the penetration resistance of laminated glass will become high more. When the said content (0) is below the said upper limit, the transparency of an intermediate film will become still higher. In the first layer, a content of the plasticizer (1) with respect to 100 parts by weight of the thermoplastic resin (1) is referred to as a content (1). The content (1) is preferably 50 parts by weight or more, more preferably 55 parts by weight or more, still more preferably 60 parts by weight or more, and preferably 100 parts by weight or less, more preferably 90 parts by weight or less, and even more preferably It is 85 parts by weight or less, and particularly preferably 80 parts by weight or less. When the content (1) is greater than or equal to the above lower limit, the flexibility of the interlayer film becomes high, and the handling of the interlayer film becomes easy. When the said content (1) is below the said upper limit, the penetration resistance of laminated glass will become still higher. In the second layer, a content of the plasticizer (2) with respect to 100 parts by weight of the thermoplastic resin (2) is referred to as a content (2). In the third layer, a content of the plasticizer (3) with respect to 100 parts by weight of the thermoplastic resin (3) is referred to as a content (3). The content (2) and the content (3) are each preferably 10 parts by weight or more, more preferably 15 parts by weight or more, still more preferably 20 parts by weight or more, particularly preferably 24 parts by weight or more, and more preferably 40 parts by weight. It is 35 parts by weight or less, more preferably 32 parts by weight or less, even more preferably 30 parts by weight or less. When the said content (2) and said content (3) are more than the said lower limit, the flexibility of an intermediate film will become high and handling of an intermediate film will become easy. When the said content (2) and said content (3) are below the said upper limit, the penetration resistance of laminated glass will improve further. In order to improve the sound insulation of the laminated glass, the content (1) is preferably more than the content (2), and the content (1) is more than the content (3). From the viewpoint of further improving the sound insulation of the laminated glass, the absolute value of the difference between the content (2) and the content (1), and the absolute value of the difference between the content (3) and the content (1) are respectively smaller than It is preferably 5 parts by weight or more, more preferably 8 parts by weight or more, still more preferably 10 parts by weight or more, particularly preferably 15 parts by weight or more, and most preferably 20 parts by weight or more. The absolute value of the difference between the above-mentioned content (2) and the above-mentioned content (1) and the absolute value of the difference between the above-mentioned content (3) and the above-mentioned content (1) are preferably 80 parts by weight or less, more preferably 75 parts by weight or less. It is more preferably 70 parts by weight or less. (Antistatic agent) In order to adjust the surface resistivity, an antistatic agent may be used. In the multilayer interlayer film, the surface layer preferably contains the above-mentioned antistatic agent. These antistatic agents may be used alone or in combination of two or more. Examples of the antistatic agent include polyoxyethylene monoalkyl ether and the like. The content of the antistatic agent is preferably 0.01% by weight or more in 100% by weight of the intermediate film or 100% by weight of the layer (the first layer, the second layer, or the third layer) containing the antistatic agent. 0.05% by weight or more, preferably 1% by weight or less, and more preferably 0.8% by weight or less. The surface resistivity cannot be determined only by the content of the antistatic agent, but if the content of the antistatic agent is above the lower limit and below the upper limit, it is easy to control the surface resistivity in a good range. (Heat-insulating compound) The intermediate film preferably contains a heat-insulating compound. The first layer preferably contains a heat-insulating compound. The second layer preferably contains a heat-insulating compound. The third layer preferably contains a heat-insulating compound. These heat-insulating compounds may be used alone or in combination of two or more. The heat-shielding compound preferably contains at least one component X of a phthalocyanine compound, a naphthalocyanine compound, and an anthraphthalocyanine compound, or contains heat-shielding particles. In this case, it is preferable to contain both the said component X and the said heat insulation particle. Component X: The intermediate film preferably contains a phthalocyanine compound, a naphthalocyanine compound, or an anthraphthalocyanine compound (hereinafter, a phthalocyanine compound, a naphthalocyanine compound, and an anthraphthalocyanine compound may be referred to as a component X). The first layer preferably contains the component X. The second layer preferably contains the component X. The third layer preferably contains the component X. The component X is a heat-insulating compound. The component X may be used alone or in combination of two or more. The component X is not particularly limited. As the component X, conventionally known phthalocyanine compounds, naphthalocyanine compounds, and anthracene phthalocyanine compounds can be used. Examples of the component X include phthalocyanine, a derivative of phthalocyanine, naphthalocyanine, a derivative of naphthalocyanine, an anthraphthalocyanine, and an anthraphthalocyanine derivative. The phthalocyanine compound and the derivative of the phthalocyanine each preferably have a phthalocyanine skeleton. Each of the naphthalocyanine compound and the derivative of the naphthalocyanine preferably has a naphthalocyanine skeleton. The anthraphthalocyanine compound and the derivative of the anthraphthalocyanine each preferably have an anthraphthalocyanine skeleton. From the viewpoint of further improving the heat insulation properties of the interlayer film and the laminated glass, the component X is preferably phthalocyanine, a derivative of phthalocyanine, or a derivative of naphthalocyanine, and more preferably phthalocyanine Derivatives of phthalocyanine. From the viewpoint of effectively improving heat insulation and maintaining visible light transmittance at a higher level for a long period of time, the component X preferably contains a vanadium atom or a copper atom. The component X preferably contains a vanadium atom, and also preferably contains a copper atom. The component X is more preferably a phthalocyanine containing a vanadium atom or a copper atom, or a derivative of a phthalocyanine containing a vanadium atom or a copper atom. From the viewpoint of further improving the heat insulation properties of the interlayer film and the laminated glass, the component X is preferably a structural unit having an oxygen atom bonded to a vanadium atom. In 100% by weight of the intermediate film or 100% by weight of the layer (the first layer, the second layer, or the third layer) containing the component X, the content of the component X is preferably 0.001% by weight or more, and more preferably 0.005% by weight % Or more, more preferably 0.01% by weight or more, and particularly preferably 0.02% by weight or more. In 100% by weight of the intermediate film or 100% by weight of the layer (the first layer, the second layer, or the third layer) containing the component X, the content of the component X is preferably 0.2% by weight or less, and more preferably 0.1% by weight % Or less, more preferably 0.05% by weight or less, and even more preferably 0.04% by weight or less. When the content of the component X is greater than or equal to the above lower limit and less than or equal to the above upper limit, the heat insulation property is sufficiently increased, and the visible light transmittance is sufficiently increased. For example, the visible light transmittance can be made 70% or more. Heat-insulating particles: The intermediate film preferably contains heat-insulating particles. The first layer preferably contains the heat-insulating particles. The second layer preferably contains the heat-insulating particles. The third layer preferably contains the heat-insulating particles. The heat-shielding particles are heat-shielding compounds. By using heat-insulating particles, infrared rays (heat rays) can be effectively blocked. The heat-insulating particles may be used alone or in combination of two or more. From the viewpoint of further improving the heat-shielding property of the laminated glass, the heat-shielding particles are more preferably metal oxide particles. The heat-insulating particles are preferably particles (metal oxide particles) formed of a metal oxide. Infrared rays with a wavelength longer than 780 nm longer than visible light have less energy than ultraviolet rays. However, infrared rays have a large thermal effect, and if infrared rays are absorbed by substances, they are released as heat. Therefore, infrared rays are generally called heat rays. By using the heat-insulating particles, infrared rays (heat rays) can be effectively blocked. The heat-insulating particles are particles capable of absorbing infrared rays. Specific examples of the heat-insulating particles include aluminum-doped tin oxide particles, indium-doped tin oxide particles, antimony-doped tin oxide particles (ATO particles), gallium-doped zinc oxide particles (GZO particles), and indium-doped zinc oxide particles ( IZO particles), aluminum-doped zinc oxide particles (AZO particles), niobium-doped titanium oxide particles, sodium-doped tungsten oxide particles, cesium-doped tungsten oxide particles, erbium-doped tungsten oxide particles, erbium-doped tungsten oxide particles, tin-doped indium oxide particles ( ITO particles), metal oxide particles such as tin-doped zinc oxide particles, silicon-doped zinc oxide particles, or lanthanum hexaboride (LaB 6 ) Particles, etc. Insulation particles other than these may be used. As far as the shielding function of heat rays is higher, metal oxide particles are preferred, ATO particles, GZO particles, IZO particles, ITO particles, or tungsten oxide particles are more preferred, and ITO particles or tungsten oxide particles are particularly preferred. In particular, in terms of a high shielding function of heat rays and easy availability, tin-doped indium oxide particles (ITO particles) are preferred, and tungsten oxide particles are also preferred. From the viewpoint of further improving the heat insulation properties of the interlayer film and the laminated glass, the tungsten oxide particles are preferably metal-doped tungsten oxide particles. The "tungsten oxide particles" include metal-doped tungsten oxide particles. Specific examples of the metal-doped tungsten oxide particles include sodium-doped tungsten oxide particles, cesium-doped tungsten oxide particles, erbium-doped tungsten oxide particles, and erbium-doped tungsten oxide particles. From the viewpoint of further improving the heat insulation properties of the interlayer film and the laminated glass, cesium-doped tungsten oxide particles are particularly preferred. From the viewpoint of further improving the heat insulation properties of the interlayer film and the laminated glass, the cesium-doped tungsten oxide particles are preferably of the formula: Cs 0.33 WO 3 The indicated tungsten oxide particles. The average particle diameter of the heat-insulating particles is preferably 0.01 μm or more, more preferably 0.02 μm or more, and preferably 0.1 μm or less, and more preferably 0.05 μm or less. When the average particle diameter is greater than or equal to the above lower limit, the shielding property of heat rays is sufficiently increased. When the average particle diameter is equal to or less than the above upper limit, the dispersibility of the heat-insulating particles becomes high. The "average particle diameter" means a volume average particle diameter. The average particle diameter can be measured using a particle size distribution measuring device ("UPA-EX150" manufactured by Nikkiso Co., Ltd.) and the like. In 100% by weight of the intermediate film or 100% by weight of the layer (the first layer, the second layer, or the third layer) containing the heat-insulating particles, the content of the heat-insulating particles (particularly, the content of tungsten oxide particles) is preferably 0.01% by weight or more, more preferably 0.1% by weight or more, still more preferably 1% by weight or more, particularly preferably 1.5% by weight or more. In 100% by weight of the intermediate film or 100% by weight of the layer (the first layer, the second layer, or the third layer) containing the heat-insulating particles, the content of the heat-insulating particles (particularly, the content of tungsten oxide particles) is preferably 6% by weight or less, more preferably 5.5% by weight or less, still more preferably 4% by weight or less, even more preferably 3.5% by weight or less, and most preferably 3% by weight or less. When the content of the heat-insulating particles is equal to or more than the lower limit and equal to or less than the upper limit, the heat-shielding property is sufficiently increased, and the visible light transmittance is sufficiently increased. (Metal Salt) The intermediate film preferably contains an alkali metal salt, an alkaline earth metal salt, or a magnesium salt (hereinafter, these are sometimes referred to as a metal salt M). It is preferable that it is derived from the said metal salt M and the said intermediate film contains an alkali metal. It is preferred that the intermediate film is derived from the metal salt M and the intermediate film contains an alkaline earth metal. It is preferable that the said intermediate film contains magnesium derived from the said metal salt M. The first layer preferably contains the metal salt M. The second layer preferably contains the metal salt M. The third layer preferably contains the metal salt M. By using the metal salt M described above, it is easy to control the adhesion between the interlayer film and a laminated glass member such as a glass plate or the adhesion between the layers in the interlayer film. The metal salt M may be used alone or in combination of two or more. The metal salt M preferably contains Li, Na, K, Rb, Cs, Mg, Ca, Sr, or Ba. The metal salt contained in the interlayer film preferably contains K or Mg. The metal salt M is more preferably an alkali metal salt of an organic acid with 2 to 16 carbon atoms, an alkaline earth metal salt of an organic acid with 2 to 16 carbon atoms, or a magnesium salt of an organic acid with 2 to 16 carbon atoms. It is a magnesium carboxylate having 2 to 16 carbons or a potassium carboxylate having 2 to 16 carbons. The magnesium carboxylate salt having 2 to 16 carbon atoms and the potassium carboxylate salt having 2 to 16 carbon atoms are not particularly limited. Examples of such metal salts include magnesium acetate, potassium acetate, magnesium propionate, potassium propionate, magnesium 2-ethylbutyrate, potassium 2-ethylbutyrate, magnesium 2-ethylhexanoate, and 2-ethyl Potassium caproate and the like. The total content of Mg and K in the intermediate film containing the above-mentioned metal salt M or the layer containing the above-mentioned metal salt M (the first layer, the second layer, or the third layer) is preferably 5 ppm or more, more preferably 10 ppm or more, more preferably 20 ppm or more, and more preferably 300 ppm or less, more preferably 250 ppm or less, and still more preferably 200 ppm or less. If the total content of Mg and K is above the above lower limit and below the above upper limit, the adhesiveness between the interlayer film and the glass plate or the interlayer adhesion between the interlayer films can be further well controlled. (Ultraviolet shielding agent) It is preferable that the said intermediate film contains an ultraviolet shielding agent. The first layer preferably contains an ultraviolet shielding agent. The second layer preferably contains an ultraviolet shielding agent. The third layer preferably contains an ultraviolet shielding agent. By using an ultraviolet shielding agent, even if the interlayer film and the laminated glass are used for a long time, the visible light transmittance is not easily lowered. These ultraviolet shielding agents may be used alone or in combination of two or more. The ultraviolet shielding agent contains an ultraviolet absorber. The ultraviolet shielding agent is preferably an ultraviolet absorber. Examples of the ultraviolet shielding agent include an ultraviolet shielding agent containing a metal atom, an ultraviolet shielding agent containing a metal oxide, an ultraviolet shielding agent (benzotriazole compound) having a benzotriazole structure, and benzophenone. Structured UV shielding agent (benzophenone compound), UV shielding agent with three structures (three compounds), UV shielding agent with malonate structure (malonate compound), UV with acetaminophen structure Screening agents (grass aniline compounds) and UV screening agents (benzoate compounds) having a benzoate structure. Examples of the ultraviolet shielding agent containing a metal atom include platinum particles, particles obtained by coating the surface of platinum particles with silicon dioxide, particles made of palladium, and particles obtained by coating the surface of palladium particles with silicon dioxide. The ultraviolet shielding agent is preferably not heat-insulating particles. The ultraviolet shielding agent is preferably an ultraviolet shielding agent having a benzotriazole structure, an ultraviolet shielding agent having a benzophenone structure, an ultraviolet shielding agent having a three structure, or an ultraviolet shielding agent having a benzoate structure. The ultraviolet shielding agent is more preferably an ultraviolet shielding agent having a benzotriazole structure or an ultraviolet shielding agent having a benzophenone structure, and further preferably an ultraviolet shielding agent having a benzotriazole structure. Examples of the ultraviolet shielding agent containing the metal oxide include zinc oxide, titanium oxide, and cerium oxide. Furthermore, the surface of the ultraviolet shielding agent containing the metal oxide may be coated. Examples of the coating material on the surface of the ultraviolet shielding agent containing a metal oxide include an insulating metal oxide, a hydrolyzable organosilicon compound, and a polysiloxane compound. Examples of the insulating metal oxide include silicon dioxide, aluminum oxide, and zirconia. The insulating metal oxide has, for example, a band gap energy of 5.0 eV or more. Examples of the ultraviolet shielding agent having a benzotriazole structure include, for example, 2- (2'-hydroxy-5'-methylphenyl) benzotriazole ("TinuvinP" manufactured by BASF), 2- ( 2'-hydroxy-3 ', 5'-di-tert-butylphenyl) benzotriazole ("Tinuvin320" manufactured by BASF), 2- (2'-hydroxy-3'-tertiary butyl-5 -Methylphenyl) -5-chlorobenzotriazole ("Tinuvin326" manufactured by BASF), and 2- (2'-hydroxy-3 ', 5'-di-pentylphenyl) benzotriazole ("Tinuvin328" manufactured by BASF), etc. In terms of excellent ultraviolet absorption performance, the above-mentioned ultraviolet shielding agent is preferably an ultraviolet shielding agent having a benzotriazole structure containing a halogen atom, and more preferably an ultraviolet shielding agent having a benzotriazole structure containing a chlorine atom. Examples of the ultraviolet shielding agent having the benzophenone structure include octanone ("Chimassorb81" manufactured by BASF) and the like. Examples of the above-mentioned ultraviolet shielding agent having three structures include "LA-F70" and 2- (4,6-diphenyl-1,3,5-tri-2-yl) -5- manufactured by ADEKA Corporation. [(Hexyl) oxy] -phenol ("Tinuvin 1577FF" manufactured by BASF) and the like. Examples of the ultraviolet shielding agent having a malonate structure include dimethyl 2- (p-methoxybenzylidene) malonate and 2,2- (1,4-phenylene dimethylene) ) Tetraethyl dimalonate, 2- (p-methoxybenzylidene) -bis (1,2,2,6,6-pentamethyl-4-piperidinyl) malonate and the like. Examples of commercially available ultraviolet shielding agents having a malonate structure include Hostavin B-CAP, Hostavin PR-25, and Hostavin PR-31 (all manufactured by Clariant). Examples of the above-mentioned ultraviolet shielding agent having an oxadiamine structure include N- (2-ethylphenyl) -N '-(2-ethoxy-5-third butylphenyl) dioxamine oxalate, N- (2-ethylphenyl) -N '-(2-ethoxy-phenyl) dioxamine oxalate, 2-ethyl-2'-ethoxy-oxoaniline ("Clariant" Sanduvor VSU ") and other oxalate diamines having an aryl group substituted on a nitrogen atom. Examples of the ultraviolet shielding agent having a benzoate structure include, for example, 2,4-di-tert-butylphenyl-3,5-di-tert-butyl-4-hydroxybenzoate (manufactured by BASF Corporation) "Tinuvin120") and so on. In 100% by weight of the intermediate film or 100% by weight of the layer (the first layer, the second layer, or the third layer) containing the ultraviolet shielding agent, the content of the ultraviolet shielding agent and the content of the benzotriazole compound are preferably 0.1% by weight or more, more preferably 0.2% by weight or more, still more preferably 0.3% by weight or more, particularly preferably 0.5% by weight or more. In 100% by weight of the intermediate film or 100% by weight of the layer (the first layer, the second layer, or the third layer) containing the ultraviolet shielding agent, the content of the ultraviolet shielding agent and the content of the benzotriazole compound are preferably 2.5% by weight or less, more preferably 2% by weight or less, still more preferably 1% by weight or less, even more preferably 0.8% by weight or less. If the content of the ultraviolet shielding agent and the content of the benzotriazole compound are at least the above lower limit and below the above upper limit, it is possible to further suppress the decrease in visible light transmittance after the elapsed period. Especially in 100% by weight of the layer containing the above-mentioned ultraviolet shielding agent, by reducing the content of the above-mentioned ultraviolet shielding agent to 0.2% by weight or more, it is possible to significantly suppress a decrease in the visible light transmittance after the passage of the intermediate film and the laminated glass . (Antioxidant) The intermediate film preferably contains an antioxidant. The first layer preferably contains an antioxidant. The second layer preferably contains an antioxidant. The third layer preferably contains an antioxidant. These antioxidants may be used alone or in combination of two or more. Examples of the antioxidant include a phenol-based antioxidant, a sulfur-based antioxidant, and a phosphorus-based antioxidant. The phenol-based antioxidant is an antioxidant having a phenol skeleton. The sulfur-based antioxidant is an antioxidant containing a sulfur atom. The phosphorus-based antioxidant is an antioxidant containing a phosphorus atom. The antioxidant is preferably a phenol-based antioxidant or a phosphorus-based antioxidant. Examples of the phenol-based antioxidant include 2,6-di-tert-butyl-p-cresol (BHT), butylhydroxyanisole (BHA), and 2,6-di-tert-butyl-4-ethyl Phenol, β- (3,5-di-tert-butyl-4-hydroxyphenyl) stearate, 2,2'-methylenebis- (4-methyl-6-butylphenol), 2,2'-methylenebis- (4-ethyl-6-third-butylphenol), 4,4'-butylene-bis- (3-methyl-6-third-butylphenol), 1,1,3-tri- (2-methyl-hydroxy-5-third butylphenyl) butane, tetrakis [methylene-3- (3 ', 5'-butyl-4-hydroxybenzene Propyl) propionate] methane, 1,3,3-tri- (2-methyl-4-hydroxy-5-third butylphenol) butane, 1,3,5-trimethyl-2,4 , 6-tris (3,5-di-third-butyl-4-hydroxybenzyl) benzene, bis (3,3'-third-butylphenol) butyrate and bis (3-third-butyl) 4-Hydroxy-5-methylphenylpropanoic acid) ethylidene bis (oxyethylidene) ester and the like. One or more of these antioxidants are suitably used. Examples of the phosphorus-based antioxidant include tridecyl phosphite, tris (tridecyl) phosphite, triphenyl phosphite, trinonylphenyl phosphite, and bis (tridecyl) pentaerythritol di Phosphite, bis (decyl) pentaerythritol diphosphite, tris (2,4-di-third-butylphenyl) phosphite, bis (2,4-di-third-butyl-6-methyl) phosphite Phenyl) ethyl, 2,2'-methylenebis (4,6-di-third-butyl-1-phenyloxy) (2-ethylhexyloxy) phosphorus, and the like. One or more of these antioxidants are suitably used. Examples of commercially available antioxidants include "IRGANOX 245" manufactured by BASF, "IRGAFOS 168" manufactured by BASF, "IRGAFOS 38" manufactured by BASF, and "Sumilizer BHT" manufactured by Sumitomo Chemical Industries, Ltd. "H-BHT" manufactured by Sakai Chemical Industry Co., Ltd., and "IRGANOX 1010" manufactured by BASF Corporation. In order to maintain the high visible light transmittance of the interlayer film and laminated glass for a long period of time, 100% by weight of the above interlayer film or an antioxidant-containing layer (first layer, second layer, or third layer) 100 The content of the antioxidant is preferably 0.1% by weight or more. In addition, since the additive effect of the antioxidant is saturated, the content of the antioxidant in 100% by weight of the intermediate film or 100% by weight of the layer containing the antioxidant is preferably 2% by weight or less. (Other components) The intermediate film, the first layer, the second layer, and the third layer may further contain a coupling agent, a dispersant, a surfactant, a flame retardant, a pigment, a dye, and a metal salt, as necessary. Followed by additives such as force modifiers, moisture resistance agents, fluorescent whitening agents, and infrared absorbers. These additives may be used alone or in combination of two or more. (Laminated Glass) FIG. 4 is a cross-sectional view showing an example of laminated glass using the interlayer film for laminated glass shown in FIG. 1. The laminated glass 21 shown in FIG. 4 includes an interlayer film 11, a first laminated glass member 22, and a second laminated glass member 23. The interlayer film 11 is arranged and sandwiched between the first laminated glass member 22 and the second laminated glass member 23. A first laminated glass member 22 is disposed on the first surface of the intermediate film 11. A second laminated glass member 23 is disposed on the second surface of the intermediate film 11 opposite to the first surface. Examples of the laminated glass member include a glass plate and a PET (polyethylene terephthalate) film. The laminated glass includes not only laminated glass in which an intermediate film is sandwiched between two glass plates, but also laminated glass in which an intermediate film is sandwiched between a glass plate and a PET film. The laminated glass is a laminated body provided with a glass plate, and it is preferable to use at least one glass plate. The first laminated glass member and the second laminated glass member are respectively a glass plate or a PET (polyethylene terephthalate) film, and it is preferable that the intermediate film includes at least one glass plate as the first layer. Laminated glass member and the above-mentioned second laminated glass member. It is particularly preferred that both the first laminated glass member and the second laminated glass member are glass plates. Examples of the glass plate include inorganic glass and organic glass. Examples of the inorganic glass include float plate glass, heat ray absorption plate glass, heat ray reflection plate glass, polishing plate glass, patterned glass, wire glass, and glass green. The organic glass is a synthetic resin glass used in place of inorganic glass. Examples of the organic glass include a polycarbonate plate and a poly (meth) acrylic resin plate. Examples of the poly (meth) acrylic resin plate include a poly (meth) acrylate plate and the like. Each thickness of the first laminated glass member and the second laminated glass member is not particularly limited, but is preferably 1 mm or more, and more preferably 5 mm or less. When the laminated glass member is a glass plate, the thickness of the glass plate is preferably 1 mm or more, and preferably 5 mm or less. When the laminated glass member is a PET film, the thickness of the PET film is preferably 0.03 mm or more, and preferably 0.5 mm or less. The manufacturing method of the said laminated glass is not specifically limited. For example, the intermediate film is sandwiched between the first and second laminated glass members, and it is sucked under reduced pressure by pressing a roller or being put into a rubber bag. Accordingly, the air remaining between the first laminated glass member and the intermediate film and the second laminated glass member and the intermediate film can be exhausted. Thereafter, pre-adhesion was performed at about 70 to 110 ° C to obtain a laminated body. Next, the laminated body is put into an autoclave or pressurized, and the pressure bonding is performed at a pressure of about 120 to 150 ° C. and a pressure of 1 to 1.5 MPa. In this way, a laminated glass can be obtained. The above laminated glass can be used in automobiles, railway vehicles, airplanes, ships and buildings. The laminated glass is preferably laminated glass for building or vehicle, and more preferably laminated glass for vehicle. The above-mentioned laminated glass can also be used for applications other than these applications. The laminated glass can be used for windshield, side glass, rear glass or sunroof glass of automobiles. Due to its high thermal insulation and high visible light transmittance, the aforementioned laminated glass is suitable for use in automobiles. The laminated glass is a laminated glass used as a head-up display (HUD). In the above-mentioned laminated glass, the display unit such as the measurement information such as the speed sent from the control unit can be presented on the windshield. Therefore, the field of vision of the driver of the car will not decrease, and the field of vision and measurement information can be recognized at the same time. The following disclosed examples illustrate the present invention in more detail. The invention is not limited to these examples. Prepare the following materials. (Thermoplastic resin) PVB (1) (Polyvinyl acetal resin, average polymerization degree is 1700, hydroxyl content is 30.5 mole%, acetylation degree is 1 mole%, acetalization degree is 68.5 mole%) PVB ( 2) (Polyvinyl acetal resin, average polymerization degree is 2300, hydroxyl content is 22 mole%, acetylation degree is 13 mole%, acetalization degree is 65 mole%) PVB (3) (polyvinyl alcohol Acetal resin, the content of hydroxyl group is 17 mole%, the degree of acetylation is 7 mole%, the degree of acetalization is 76 mole%) PVB (4) (polyvinyl acetal resin, the content of hydroxyl group is 23 mole %, Acetalization degree 8 mol%, acetalization degree 69 mol%) PVB (5) (polyvinyl acetal resin, hydroxyl content of 19 mol%, acetalization degree 1 mol%, The degree of acetalization is 80 mol%) Regarding the polyvinyl acetal resin used, n-butyraldehyde having a carbon number of 4 is used during acetalization. Regarding polyvinyl acetal resin, the degree of acetalization (degree of butyralization), the degree of acetylation, and the content ratio of hydroxyl groups were measured by a method in accordance with JIS K6728 "Test method for polyvinyl butyral". In addition, when measured by ASTM D1396-92, it also shows the same value as the method based on JIS K6728 "Testing method for polyvinyl butyral". (Plasticizer) 3GO (triethylene glycol di-2-ethylhexanoate) 3GH (triethylene glycol di-2-ethylbutyrate) (antistatic agent) Noigen ET-83 (First Industrial (Manufactured by a pharmaceutical company) Nymeen S-207 (manufactured by Nippon Oil Co., Ltd.) Nymeen S-220 (manufactured by Nippon Oil Co., Ltd.) (ultraviolet shielding agent) Tinuvin326 (2- (2'-hydroxy-3'-tert-butyl-5-methyl) Phenyl) -5-chlorobenzotriazole, manufactured by BASF Corporation) (antioxidant) BHT (2,6-di-tert-butyl-p-cresol) (Example 1) A composition for forming an intermediate film Production: Based on 100 parts by weight of PVB (1), 40 parts by weight of 3GO, 0.3 parts by weight of Noigen ET-83, 0.2 parts by weight of Tinuvin 326, and 0.2 parts by weight of BHT are added. A composition for forming an intermediate film. Production of intermediate film: The composition used to form the intermediate film is extruded using an extruder. In Example 1, the interlayer film was extruded to form a wedge-shaped interlayer film. In addition, on the roll core (material: polypropylene with talc added) (outer diameter 15 cm, height 120 cm) manufactured by Koga Polymer Co., Ltd., under the condition of a winding tension of 200 N, the extrusion direction of the intermediate film The interlayer film was taken up 125 m in a manner consistent with the outer circumferential direction of the winding core, thereby obtaining a wound body. The obtained intermediate film has a minimum thickness at one end and a maximum thickness at the other end, and does not have a uniform thickness portion. In the obtained intermediate film, the distance X between one end and the other end is about 1 m. (Examples 2 to 5, 11 to 15 and Comparative Examples 1, 2, 5, and 6) The types of the blending ingredients, the blending amounts, wedge angles, and thicknesses of the blending ingredients were set as shown in Tables 1 and 3 below, respectively. Other than that, a wedge-shaped single-layered intermediate film and a wound body were produced in the same manner as in Example 1. (Example 21) The types of the blending ingredients, the blending amounts, the wedge angles, and the thicknesses of the blending ingredients were set as shown in Table 5 below, and a uniform thickness portion was formed. Wedge-shaped single-layer interlayer film and wound body. The obtained intermediate film has a uniform thickness portion with a certain thickness within a distance of 100 mm from the other end to one end, and the length of the uniform thickness portion is 100 mm. (Examples 22 to 25 and Comparative Examples 9 and 10) The types of the blending ingredients, the blending amounts of the blending ingredients, the wedge angle, the thickness, and the length of the uniform thickness portions were set as shown in Table 5 below, respectively. In the same manner as in Example 21, a wedge-shaped single-layer interlayer film and a wound body were produced. (Example 6) Production of a composition for forming the first layer: 60 parts by weight of 3GO, 0.2 parts by weight of Tinuvin326, and 0.2 parts by weight of BHT were added to 100 parts by weight of PVB (2), and a mixing roller was used Thoroughly knead to obtain a composition for forming the first layer. Production of a composition for forming the second layer and the third layer: 40 parts by weight of 3GO, 0.3 parts by weight of Noigen ET-83, 0.2 parts by weight of Tinuvin326, and 0.2 parts of 100 parts by weight of PVB (1) are added. The parts by weight of BHT are sufficiently kneaded with a mixing roller to obtain a composition for forming the second layer and the third layer. Production of intermediate film: The composition for forming the first layer and the composition for forming the second layer and the third layer were co-extruded using a coextruder. A wedge-shaped intermediate film having a laminated structure of the second layer / the first layer / the third layer was produced. In addition, on the roll core (material: polypropylene with talc added) (outer diameter 15 cm, height 120 cm) manufactured by Koga Polymer Co., Ltd., under the condition of a winding tension of 200 N, the extrusion direction of the intermediate film The interlayer film was taken up 125 m in a manner consistent with the outer circumferential direction of the winding core, thereby obtaining a wound body. The obtained intermediate film has a minimum thickness at one end and a maximum thickness at the other end, and does not have a uniform thickness portion. In the obtained intermediate film, the distance X between one end and the other end is about 1 m. When the average thickness of the intermediate film is T, the average thickness of the first layer is 0.12T, and the total of the average thickness of the second layer and the average thickness of the third layer is 0.88T. The average thickness of the second layer is the same as the average thickness of the third layer. (Examples 7 to 10, 16 to 20, and Comparative Examples 3, 4, 7, and 8) As shown in Tables 2 and 4 below, the types of the blending ingredients, the blending amounts, wedge angles, and thicknesses of the blending ingredients were set, respectively. Other than that, a wedge-shaped multilayer intermediate film and a wound body were produced in the same manner as in Example 6. (Example 26) The types of the blending ingredients, the blending amount, the wedge angle, and the thickness of the blending ingredients were set as shown in Table 6 below, and a uniform thickness portion was formed. Wedge-shaped single-layer interlayer film and wound body. The obtained intermediate film has a uniform thickness portion with a certain thickness within a distance of 100 mm from the other end to one end, and the length of the uniform thickness portion is 100 mm. (Examples 27 to 30 and Comparative Examples 11 and 12) The types of blending ingredients, blending amounts of blending ingredients, wedge angle, thickness, and length of uniform thickness parts were set as shown in Table 6 below, respectively. In the same manner as in Example 26, a wedge-shaped single-layer interlayer film and a wound body were produced. (Evaluation) (1) Surface resistivity The obtained intermediate film was left at 10 ° C. and a relative humidity of 50% for 7 days to obtain an intermediate film X after being left to stand. The surface resistivity of one end of the intermediate film X and the surface resistivity of the other end of the intermediate film X were measured. Specifically, the surface resistivity meter ("Hiresta UX" manufactured by Mitsubishi Chemical Analytech Co., Ltd.) was used, and evaluation was performed by a method according to JIS K 6911: 1995. One end of the intermediate film X is set as one side, and the intermediate film is cut out with a square size of 10 cm × 10 cm, and an electrode is provided at the center of the cut intermediate film. The surface resistivity of one end of the intermediate film X was measured at a position 5 cm inward from the end portion on the one end side of the intermediate film X. Set the other end of the intermediate film X as one side, cut out the intermediate film with a square size of 10 cm × 10 cm, and set an electrode at the center of the cut intermediate film. The surface resistivity of the other end of the intermediate film X was measured at a position 5 cm inward from the end on the other end side of the intermediate film X. The surface resistivity of one end of the intermediate film X shows the same value on the surfaces of both sides of the intermediate film. The surface resistivity of the other end of the intermediate film X shows the same value on both sides of the intermediate film. (2) The rationality of the intermediate film in the state of the rolled body is rolled out by pulling out the obtained rolled body. The rationality of the intermediate film in the state of the wound body was determined based on the following criteria. [The rationality of the intermediate film in the state of the wound body] ○: No deviation and bending when unrolled, in a state where the surface state of the intermediate film is good at one end and the other end of the intermediate film and the intermediate film is not wrinkled Roll out the interlayer film ×: There is an offset or bend when it is rolled out. Roll out the interlayer film when the surface state of the interlayer film at one or the other end is degraded or the interlayer film is wrinkled (3) Prepare a pair of glass plates (clear glass, 510 mm × 1000 mm, thickness 2.0 mm) for the intermediate film when laminating glass. The obtained intermediate film was cut out to a size corresponding to the size of the glass plate. An interlayer film was sandwiched between a pair of glass plates to obtain a laminated body. The obtained laminated body was embedded in a rubber pipe (frame member) made of EPDM. The width of the rubber tube is 15 mm. Next, the laminated body embedded in the rubber pipe made of EPDM was pre-press-bonded by a vacuum bag method. The autoclave was used to press-bond the laminated body at 150 ° C. and a pressure of 1.2 MPa to obtain a laminated glass. The rationality of the interlayer film when the laminated glass was produced was determined based on the following criteria. [The rationality of the interlayer film when making laminated glass] ○: Obtained the laminated glass in a state that no unexpected adhesion occurs at one end and the other end of the interlayer film, and the contact state between the interlayer film and the glass plate Good, and the intermediate film has no wrinkles ×: Laminated glass is obtained in a state that an unexpected adhesion occurs at one or the other end of the intermediate film, the contact state of the intermediate film and the glass plate is partially different, or the intermediate film has wrinkles (4) Prepare a pair of glass plates for double images (clear glass, 510 mm × 910 mm, thickness 2.0 mm). An interlayer film having a size corresponding to the size of the glass plate is inserted between a pair of glass plates to obtain a laminated body. The obtained laminated body was embedded in a rubber pipe (frame member) made of EPDM. The width of the rubber tube is 15 mm. Next, the laminated body embedded in the rubber pipe made of EPDM was pre-press-bonded by a vacuum bag method. The autoclave was used to press-bond the laminated body at 150 ° C. and a pressure of 1.2 MPa to obtain a laminated glass. The obtained laminated glass was set at the position of the windshield so that one end of the intermediate film became downward. The display information is reflected from the display unit provided below the laminated glass to the laminated glass, and the presence of a double image is visually confirmed at a specific position. The dual image was determined based on the following criteria. [Judgment criteria for double image] ○: No double image was confirmed. ×: Double image was confirmed. Details and results of the interlayer are shown in Tables 1 to 6 below. Moreover, when the evaluation result of a handleability is favorable, the laminated glass with which appearance defect was suppressed was obtained. In the table, "E + 12" means "10 12 "," E + 13 "means" 10 13 "," E + 14 "means" 10 14 ". [Table 1] [Table 2] [table 3] [Table 4] [table 5] [TABLE 6]

1‧‧‧第1層1‧‧‧ Level 1

1A‧‧‧第1層1A‧‧‧Level 1

1Aa‧‧‧厚度方向之剖面形狀為矩形之部分1Aa‧‧‧Thick section in rectangular direction

1Ab‧‧‧厚度方向之剖面形狀為楔狀之部分1Ab‧‧‧thickness section in the thickness direction

2‧‧‧第2層2‧‧‧ Level 2

3‧‧‧第3層3‧‧‧ Level 3

11‧‧‧中間膜11‧‧‧ Interlayer

11A‧‧‧中間膜11A‧‧‧Interlayer

11a‧‧‧一端11a‧‧‧One end

11b‧‧‧另一端11b‧‧‧ the other end

11Aa‧‧‧厚度方向之剖面形狀為矩形之部分11Aa‧‧‧Thick section in rectangular direction

11Ab‧‧‧厚度方向之剖面形狀為楔狀之部分11Ab‧‧‧thickness section in the thickness direction

21‧‧‧層合玻璃21‧‧‧ laminated glass

22‧‧‧第1層合玻璃構件22‧‧‧1st laminated glass member

23‧‧‧第2層合玻璃構件23‧‧‧ 2nd laminated glass member

51‧‧‧捲繞體51‧‧‧rolled body

61‧‧‧捲芯61‧‧‧ core

R1‧‧‧顯示對應區域R1‧‧‧Display corresponding area

R2‧‧‧周邊區域R2‧‧‧surrounding area

R3‧‧‧陰影區域R3‧‧‧ shaded area

θ‧‧‧楔角θ‧‧‧ wedge angle

圖1(a)及(b)係模式性地表示本發明之第1實施形態之層合玻璃用中間膜之剖視圖及前視圖。 圖2(a)及(b)係模式性地表示本發明之第2實施形態之層合玻璃用中間膜之剖視圖及前視圖。 圖3係模式性地表示將圖1所示之層合玻璃用中間膜捲繞而成之捲繞體之立體圖。 圖4係表示使用圖1所示之層合玻璃用中間膜之層合玻璃之一例之剖視圖。1 (a) and 1 (b) are cross-sectional views and front views schematically showing an interlayer film for laminated glass according to a first embodiment of the present invention. 2 (a) and 2 (b) are cross-sectional views and front views schematically showing an interlayer film for laminated glass according to a second embodiment of the present invention. 3 is a perspective view schematically showing a wound body obtained by winding the interlayer film for laminated glass shown in FIG. 1. 4 is a cross-sectional view showing an example of a laminated glass using the interlayer film for laminated glass shown in FIG. 1.

Claims (11)

一種層合玻璃用中間膜，其係用於層合玻璃之中間膜，且 含有熱塑性樹脂， 具有一端及與上述一端為相反側之另一端，上述另一端之厚度大於上述一端之厚度， 於將上述中間膜於10℃及相對濕度50%下放置7天時，放置後之上述中間膜之上述一端之表面電阻率為9.5×1013 Ω以下，且放置後之上述中間膜之上述另一端之表面電阻率小於放置後之上述中間膜之上述一端之表面電阻率。An interlayer film for laminated glass, which is an interlayer film for laminated glass, contains a thermoplastic resin, has one end and the other end opposite to the one end, and the thickness of the other end is greater than the thickness of the one end. When the intermediate film is left at 10 ° C. and a relative humidity of 50% for 7 days, the surface resistivity of the one end of the intermediate film after being left is 9.5 × 10 13 Ω or less, and The surface resistivity is smaller than the surface resistivity of the one end of the intermediate film after being left. 如請求項1之層合玻璃用中間膜，其中上述一端之上述中間膜之厚度相對於上述另一端之上述中間膜之厚度的比為1.2以上。For example, the interlayer film for laminated glass according to claim 1, wherein the ratio of the thickness of the interlayer film at the one end to the thickness of the interlayer film at the other end is 1.2 or more. 如請求項1或2之層合玻璃用中間膜，其具有厚度方向之剖面形狀為楔狀之部分。For example, the interlayer film for laminated glass of claim 1 or 2 has a wedge-shaped section in the thickness direction. 如請求項1或2之層合玻璃用中間膜，其含有塑化劑。The interlayer film for laminated glass as claimed in claim 1 or 2, which contains a plasticizer. 如請求項1或2之層合玻璃用中間膜，其具備： 第1層、及 配置於上述第1層之第1表面側之第2層。The interlayer film for laminated glass according to claim 1 or 2, comprising: a first layer; and a second layer disposed on the first surface side of the first layer. 如請求項5之層合玻璃用中間膜，其中上述第1層中之上述熱塑性樹脂為聚乙烯醇縮醛樹脂， 上述第2層中之上述熱塑性樹脂為聚乙烯醇縮醛樹脂，且 上述第1層中之上述聚乙烯醇縮醛樹脂之羥基之含有率低於上述第2層中之上述聚乙烯醇縮醛樹脂之羥基之含有率。For example, the interlayer film for laminated glass according to claim 5, wherein the thermoplastic resin in the first layer is a polyvinyl acetal resin, the thermoplastic resin in the second layer is a polyvinyl acetal resin, and the first The content rate of the hydroxyl group of the said polyvinyl acetal resin in 1 layer is lower than the content rate of the hydroxyl group of the said polyvinyl acetal resin in the said 2nd layer. 如請求項5之層合玻璃用中間膜，其中上述第1層中之上述熱塑性樹脂為聚乙烯醇縮醛樹脂， 上述第2層中之上述熱塑性樹脂為聚乙烯醇縮醛樹脂， 上述第1層含有塑化劑， 上述第2層含有塑化劑，且 上述第1層中之上述塑化劑相對於上述第1層中之上述聚乙烯醇縮醛樹脂100重量份的含量多於上述第2層中之上述塑化劑相對於上述第2層中之上述聚乙烯醇縮醛樹脂100重量份的含量。For example, the interlayer film for laminated glass according to claim 5, wherein the thermoplastic resin in the first layer is a polyvinyl acetal resin, the thermoplastic resin in the second layer is a polyvinyl acetal resin, and the first The layer contains a plasticizer, the second layer contains a plasticizer, and the content of the plasticizer in the first layer with respect to 100 parts by weight of the polyvinyl acetal resin in the first layer is more than that in the first layer. The content of the plasticizer in the two layers with respect to 100 parts by weight of the polyvinyl acetal resin in the second layer. 如請求項5之層合玻璃用中間膜，其具備配置於上述第1層之與上述第1表面側相反之第2表面側之第3層。The interlayer film for laminated glass according to claim 5, further comprising a third layer disposed on the second surface side of the first layer opposite to the first surface side. 如請求項1或2之層合玻璃用中間膜，其係用於作為抬頭顯示器之層合玻璃之中間膜。The interlayer film for laminated glass of claim 1 or 2 is an interlayer film for laminated glass used as a head-up display. 一種捲繞體，其具備： 捲芯、及 如請求項1至9中任一項之層合玻璃用中間膜，且 於上述捲芯之外周捲繞有上述層合玻璃用中間膜。A rolled body comprising a roll core and the interlayer film for laminated glass according to any one of claims 1 to 9, and the interlayer film for laminated glass is wound around the outer periphery of the roll core. 一種層合玻璃，其具備： 第1層合玻璃構件、 第2層合玻璃構件、及 如請求項1至9中任一項之層合玻璃用中間膜，且 於上述第1層合玻璃構件與上述第2層合玻璃構件之間配置有上述層合玻璃用中間膜。A laminated glass comprising: a first laminated glass member, a second laminated glass member, and the interlayer film for laminated glass according to any one of claims 1 to 9, and the first laminated glass member The interlayer film for laminated glass is disposed between the second laminated glass member and the second laminated glass member.
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